113 results about "Hydrogen selectivity" patented technology

The invention discloses a catalyst for hydrogen production through tar steam reforming and a preparation method and application thereof. The catalyst comprises a cobalt-magnesium-aluminum composite spinel carrier and an active component loaded on the cobalt-magnesium-aluminum composite spinel carrier, the active component comprises nickel and at least one metal additive selected from iron, zirconium and ruthenium. The preparation method mainly comprises the following steps: preparing the carrier by adopting a coprecipitation method, loading the active component by adopting an impregnation method, and drying and reducing to obtain the final catalyst. The catalyst is used for tar component steam reforming hydrogen production reaction, especially for treating raw materials containing phenol and water vapor at 600-700 DEG C, tar conversion can be efficiently catalyzed, product gas rich in hydrogen can be generated, hydrogen selectivity is high, and almost no methane is generated. The catalyst has the advantages of high activity, good stability, strong carbon deposition resistance and the like, and is suitable for purification and high-value utilization of biomass pyrolysis tar.

The invention relates to the field of catalyst preparation, and discloses a methane dry reforming catalyst, a preparation method and application thereof, and a methane dry reforming method, the methane dry reforming catalyst comprises a catalyst carrier and an active metal; the active metal is selected from at least one of Ni, Ru, Rh, Ir and Pt; based on the total mass of the catalyst, the mass percentage content of the catalyst carrier is 80-99wt%, and the mass percentage content of the active metal based on oxide is 1-20wt%; the average mechanical strength of the catalyst carrier is 20-60 N / mm; the particle mechanical strength dispersion coefficient of the catalyst carrier is in the range of 0-0.52. The catalyst is used in a reaction for preparing synthesis gas by methane dry reforming, and has high methane conversion rate and hydrogen selectivity.

The invention discloses a high-density ultrafine-particle-size copper-based catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts. Nitrogen-doped carbon-coated copper nanoparticles are prepared through coordination of polyhydroxy glucose and citrulline with copper ions, drying and in-situ pyrolysis, so that the high-load, high-dispersion, high-density and ultrafine-particle-size copper-based catalyst is obtained. According to the method, growth and leaching of copper nanoparticles under the water phase reforming condition are effectively inhibited, and the hydrogen production performance of the catalyst is greatly enhanced. The catalyst has the advantages of high hydrogen production rate, high hydrogen selectivity and good hydrothermal stability. The high-density ultrafine-particle-size copper-based catalyst is especially suitable for catalyzing hydrogen production through ethanol water phase reforming, the hydrogen production rate reaches 33.8 micromol.gcat <-1 >. S <-1 > under the condition of 210 DEG C, the hydrogen selectivity is higher than 99.9%, and long-time efficient hydrogen production through ethanol water phase reforming is achieved.

The application discloses a cold plasma microbubble and biomass supercritical water gasification hydrogen production system and method, and belongs to the field of biomass hydrogen production. The system comprises a raw material processing unit, a cold plasma pre-activation unit, a high-pressure subcritical pretreatment unit, a supercritical gasification reaction unit, a gas-liquid separation unit, a hydrogen gas purification unit, a waste heat recovery unit and a circulating water treatment unit. After being pulped, the raw material is modified by the cold plasma pre-activation unit to improve the activity, and then enters the supercritical reactor with a built-in catalytic bed through the high-pressure subcritical pretreatment unit containing plasma microbubble generated active species to complete the gasification. After the product gas-liquid separation, the hydrogen-containing gas is purified to obtain high-purity hydrogen gas, the liquid phase water is purified and reused, the waste heat is recovered to supply system energy consumption, and the circulating water is treated to discharge crystalline salt to prevent salt analysis. The application realizes the deep cooperation of cold plasma and supercritical water gasification, improves the gasification efficiency and hydrogen production selectivity, reduces the energy consumption, tar and carbon deposition, guarantees the stable operation of the system, reduces the comprehensive cost, and is suitable for the industrialization of biomass hydrogen production.

The invention discloses a mixed matrix membrane for ammonia separation and a preparation method thereof, polyether block polyamide (Pebax) rich in ether bonds and a liquid adsorbent are dissolved in a solvent, reflux stirring is performed to obtain a membrane casting solution, then the membrane casting solution is coated on a substrate, the solvent is heated to volatilize, and the final mixed matrix membrane is obtained. Benefited from the strong ammonia gas affinity of the Pebax polyether chain segment and the liquid adsorbent, the obtained mixed matrix membrane has an efficient ammonia separation effect, and when the mixed matrix membrane is used for separating synthesis ammonia residual gas, the ammonia permeability can reach 2656.9 Barrer, and the ammonia / nitrogen selectivity and the ammonia / hydrogen selectivity reach 594.1 and 150.8 respectively.

The invention discloses an MOFs composite membrane for ammonia separation and a preparation method thereof, and the preparation method comprises the following steps: S1, mixing a metal compound, an organic ligand and a solvent according to a specific molar ratio, reacting at a specific temperature to form an MOF material, and activating the MOF material as a seed crystal; s2, preparing the MOF material into a solution with a specific concentration, uniformly mixing the MOF material with the solution through a stirring, ultrasonic treatment and impregnation method or a method combining stirring, ultrasonic treatment and impregnation, and then introducing the solution to one main surface of a porous support layer to obtain a support layer membrane; and S3, preparing a metal organic framework material synthetic solution with the same molar ratio as that in the step S1, then putting the support layer membrane with seed crystal introduced on the surface into the metal organic framework material synthetic solution, and performing vacuum heating, drying and activating under the same reaction condition as that in the step S1 to form the MOFs composite membrane. The obtained composite membrane has an efficient ammonia separation effect, and when the composite membrane is used for separating ammonia-containing gas, the ammonia permeability reaches up to 2956.9 GPU, and the ammonia / nitrogen selectivity and the ammonia / hydrogen selectivity respectively reach up to 620.1 and 180.8.

The invention provides a hydrogen fuel engine tail gas aftertreatment method and device.The method comprises the steps that when the original exhaust temperature of a hydrogen fuel engine is larger than a first temperature threshold value, tail gas is controlled to enter a first pipeline to participate in aftertreatment, and the first pipeline is provided with a hydrogen-oxygen catalyst and an ammonia selective catalytic reduction device; the hydrogen-oxygen catalyst is located at the upstream of the ammonia selective catalytic reduction device; and when the original exhaust temperature of the hydrogen fuel engine is smaller than or equal to a second temperature threshold value, the tail gas is controlled to enter a second pipeline to participate in aftertreatment, the second temperature threshold value is smaller than or equal to the first temperature threshold value, and the second pipeline is provided with a hydrogen selective catalytic reduction device. According to the tail gas aftertreatment method and device, the tail gas aftertreatment mode is reasonably selected on the basis of the original exhaust temperature of the hydrogen fuel engine, and therefore emission of nitrogen oxide and hydrogen under the full working condition is effectively restrained.

The invention discloses a preparation method of a transition metal phosphide catalyst anchored by using a carbon-based material as a carrier and application of the transition metal phosphide catalyst in the field of formic acid hydrogen production, and belongs to the technical field of formic acid hydrogen production catalysis. Transition metal phosphide is anchored on a carbon-based material carrier in situ by adopting a chemical reduction method to obtain a precursor, and the precursor is roasted and pickled in a nitrogen atmosphere to obtain the novel carbon-based material loaded transition metal phosphide catalyst. The catalyst has the advantages of simple preparation method, high catalytic efficiency, cheap non-noble metal raw materials and the like, shows the formic acid conversion rate of 100% and the hydrogen selectivity of 99% or above in the catalytic gas-phase formic acid hydrogen production reaction, and also has good catalytic stability.

A method of hydrogen (H2) storage and withdrawal is described. The method includes injecting a fluid stream into a subsurface formation via an injection well to form a composition containing a gas-phase mixture, a first liquid-phase mixture, and a solid matrix, injecting a H2-containing gas stream into the subsurface formation via the injection well to form a first gas mixture containing H2 gas, heating and pressurizing the subsurface formation containing the first gas mixture via at least one heat well to achieve a storage condition and maintaining the storage condition to store the H2 in the subsurface formation, injecting a CH4-containing gas stream into the subsurface formation via the at least one injection well to form a second gas mixture, withdrawing the second gas mixture via at least one production well, and introducing the second gas mixture into a hydrogen purification device including hydrogen-selective membranes.

Hydrogen purification devices and their components are disclosed. In some embodiments, the devices may include at least one foil-microscreen assembly disposed between and secured to first and second end frames. The at least one foil-microscreen assembly may include at least one hydrogen-selective membrane and at least one microscreen structure including a non-porous planar sheet having a plurality of apertures forming a plurality of fluid passages. The planar sheet may include generally opposed planar surfaces configured to provide support to the permeate side. The plurality of fluid passages may extend between the opposed surfaces. The at least one hydrogen-selective membrane may be metallurgically bonded to the at least one microscreen structure. In some embodiments, the devices may include a permeate frame having at least one membrane support structure that spans at least a substantial portion of an open region and that is configured to support at least one foil-microscreen assembly.

This application discloses a heterogeneous catalyst for the selective hydrogenation of nitrile rubber and its application. The heterogeneous catalyst, by weight percentage, consists of 1–10% noble metal particles and 90–99% support, wherein the support is alumina, cerium oxide, titanium dioxide, zirconium oxide, or neodymium oxide. The content of positively valence noble metal in the catalyst accounts for 20–80% of the total noble metal element content, and the noble metal is uniformly loaded on the support. The noble metal is Rh, Os, Ir, Pt, Ru, or Pd, and the particle size of the noble metal particles is 1–20 nm. The heterogeneous catalyst of this invention can carry out hydrogenation reactions at room temperature and pressure, and its hydrogenation selectivity is as high as 100%, with a hydrogenation activity >99%.

The invention relates to the technical field of sensing and measurement, in particular to an Au-loaded ZnO / Zn2SnO4 / SnO2 composite sensitive material, a preparation method of the Au-loaded ZnO / Zn2SnO4 / SnO2 composite sensitive material, a hydrogen sensor and a preparation method of the hydrogen sensor. Comprising the following steps: adding an Au-loaded ZnO sensitive material into a mixed solution containing boric acid and ammonium hexafluorostannate for ultrasonic reaction, carrying out solid-liquid separation on an ultrasonic reaction product, and drying and calcining a solid-phase product obtained by solid-liquid separation to obtain the Au-loaded ZnO / Zn2SnO4 / SnO2 composite sensitive material, the Au-loaded ZnO sensitive material is a microsphere with a hierarchical structure, and the microsphere is formed by assembling nano sheet layers. A hydrogen sensor prepared from the Au-loaded ZnO / Zn2SnO4 / SnO2 composite sensitive material is relatively high in sensitivity in hydrogen detection, optimal in sensitivity at 240 DEG C and relatively low in working temperature, has relatively good response between 20 ppm and 300 ppm, and also has very good repeatability and hydrogen selectivity.

The present application provides a method and device for after-treatment of exhaust gas from a hydrogen fuel engine, the method comprising: when the original exhaust temperature of the hydrogen fuel engine is greater than a first temperature threshold, controlling the exhaust gas to enter a first pipeline for after-treatment, wherein the first pipeline is provided with a hydrogen-oxygen catalyst and an ammonia selective catalytic reduction device, and the hydrogen-oxygen catalyst is located upstream of the ammonia selective catalytic reduction device; when the original exhaust temperature of the hydrogen fuel engine is less than or equal to a second temperature threshold, controlling the exhaust gas to enter a second pipeline for after-treatment, wherein the second temperature threshold is less than or equal to the first temperature threshold, and the second pipeline is provided with a hydrogen selective catalytic reduction device. Through the present application, a reasonable selection of exhaust after-treatment methods is made based on the original exhaust temperature of the hydrogen fuel engine, thereby effectively suppressing nitrogen oxide and hydrogen emissions under all operating conditions.

The invention discloses a carbon-coated copper catalyst as well as a preparation method and application thereof, and relates to the technical field of catalysts. According to the technical scheme, beta cyclodextrin is used as a carbon source, so that active component copper-containing particles are uniformly distributed on a carbon coating layer; wherein a carbon coating layer derived after cyclodextrin pyrolysis can effectively inhibit migration and agglomeration of copper active sites, so that the catalyst has relatively high selectivity and relatively good reaction activity, and the catalytic performance of the catalyst is promoted to be improved; the carbon-coated copper catalyst is suitable for catalyzing an ethanol water phase reforming hydrogen production reaction, the hydrogen production rate reaches 35.6 [mu] mol H2 / gcat / s, the hydrogen selectivity is higher than 99.9%, and long-time continuous and stable operation of ethanol water phase reforming hydrogen production can be ensured.

To provide a catalyst capable of selectively generating methanol through hydrogenation of carbon dioxide, and an efficient method for producing methanol employing the catalyst.SOLUTION: A catalyst comprising a material in which a semiconductor oxide represented by Formula (1) and a semiconductor oxide represented by Formula (2) are joined. Formula (1): AJaOm. Formula (2): DOnXx.SELECTED DRAWING: None

The invention discloses a polychlorinated polymer / graphene oxide composite membrane for ammonia separation and a preparation method thereof, and the preparation method comprises the following steps: S1, dissolving graphene oxide in a solvent I, and depositing on a porous polymer substrate through a vacuum filtration device to obtain a graphene oxide composite membrane; s2, dissolving a nitrogen heterocyclic compound containing a carbon-carbon double bond, a cross-linking agent and an initiator in a solvent II, spin-coating on the graphene oxide composite film, and then heating for 2-8 hours to obtain a polymer / graphene oxide composite film; s3, soaking the polymer / graphene oxide composite membrane in a halogenated hydrocarbon solution to obtain a quaternized polymer / graphene oxide composite membrane; and S4, soaking the quaternized graphene oxide polymer composite membrane in a metal chloride solution to obtain the polychlorinated polymer / graphene oxide composite membrane. The obtained composite membrane has an efficient ammonia separation effect, and when the composite membrane is used for separating ammonia-containing gas, the ammonia permeability reaches up to 3586.3 Barrer, and the ammonia / nitrogen selectivity and the ammonia / hydrogen selectivity respectively reach up to 674.1 and 214.8.

The invention belongs to the technical field of catalysts, and particularly relates to a Ni-based alloy solid solution catalyst, a preparation method thereof and application of the Ni-based alloy solid solution catalyst in biomass pyrolysis hydrogen production. The invention provides a Ni-based alloy solid solution catalyst which is an alloy composed of Ni, M and Bi, and M comprises one or more of Ce, La, Zn, Na, K, Ba, Al, Mg, Fe, Co, Cu, Sr, In, Cd, Mo and W. The Ni-based alloy solid solution catalyst can promote C-H fracture and water-gas shift reaction, and also can enable deposited carbon to float on the surface of the catalyst, so that the deposited carbon is effectively removed, and the hydrogen production selectivity is greatly improved.

Hydrogen purification devices and components thereof are disclosed. In some embodiments, a device includes a permeation frame that can include a perimeter portion and a membrane support portion surrounded by the perimeter portion. The membrane support portion can include opposing first and second surfaces, each of the first and second surfaces having a plurality of grooves. The membrane support portion can contact and support at least one hydrogen-selective membrane. The membrane support portion can be integrally formed with the perimeter portion. The permeation frame can also include one or more output apertures in at least one of the perimeter portion and the membrane support portion. The permeation frame can also include at least one input aperture in the perimeter portion. The at least one input aperture can be distinct and spaced apart from the one or more output apertures.

The present invention relates to the field of hydrogen peroxide preparation, and discloses a method for improving the hydrogenation selectivity of anthraquinone in the preparation of hydrogen peroxide by a fluidized bed. In the method of the present invention, a three-component mixed gas of hydrogen, nitrogen, and ammonia is introduced into the anthraquinone hydrogenation reaction system of the fluidized bed hydrogenation reactor in a volume ratio of 60-95:10-40:0.01-1. After being fully mixed with the catalyst and the working solution, a hydrogenation reaction occurs, which can significantly reduce the formation of tetrahydroanthraquinone and anthraquinone degradation products during the anthraquinone hydrogenation process, and greatly improve the selectivity of anthraquinone hydrogenation. The method for improving the hydrogenation selectivity of anthraquinone in the present invention is suitable for the hydrogenation reactions of various anthraquinones.

The invention discloses a preparation method of a monoclinic phase Co / ZrO2 catalyst for hydrogen production through ethanol oxidation reforming. The preparation method comprises the following steps: S1, dissolving Zr (NO3) 4. 5H2O and CO (NH2) 2 in deionized water; s2, transferring the mixed solution in the step S1 into a high-pressure kettle with a polytetrafluoroethylene lining for reaction; s3, filtering and washing the obtained precipitate; s4, drying for a period of time at a certain temperature, and calcining to obtain a ZrO2 carrier; s5, putting the ZrO2 carrier into a Co (NO3) 2 aqueous solution, and carrying out ultrasonic dispersion; s6, after drying, activating treatment is conducted through H2 / Ar mixed gas, and the catalyst for the ESR reaction is obtained. Experimental results show that the monoclinic phase Co / ZrO2 catalyst is rough and porous in surface, uniform in distribution and irregular in particle shape, has higher ethanol conversion rate, hydrogen selectivity and catalytic tolerance, and shows higher C-C bond cracking capacity and catalytic ethanol reforming activity in hydrogen production by ethanol oxidation reforming.

The invention relates to the technical field of chemical industry, in particular to a method for preparing styrene by oxidative dehydrogenation of ethylbenzene, which comprises the following steps: under the condition of low temperature of 150-300 DEG C, ethylbenzene is contacted with an oxygen storage catalyst in an oxidation state, the catalyst catalyzes ethylbenzene dehydrogenation to generate styrene and hydrogen, and then the hydrogen is selectively oxidized into water by self lattice oxygen, directional movement of reaction balance is realized; the catalyst consuming lattice oxygen is regenerated through oxygen-containing gas flow to recover the oxidation state and is recycled. The oxygen storage catalyst is a composite metal oxide or carbide-oxide composite material with a specific structure, and has the functions of ethylbenzene activation, lattice oxygen storage and release and molecular oxygen activation. The invention also provides two reactor implementation schemes of fixed bed switching and fluidized bed circulation. The problems that traditional high-temperature dehydrogenation is high in energy consumption and limited in selectivity and existing oxidative dehydrogenation uses pure oxygen to cause safety and excessive oxidation are solved, and low-temperature, efficient and safe styrene production is achieved.

A portable device for generating hydrogen from ammonia includes a first reactor layer having an ammonia inlet a retentate port, and a chamber containing an ammonia decomposition catalyst. A first gas-collecting layer has a manifold with a hydrogen outlet. A first hydrogen-selective membrane is disposed between the first reactor layer and the first gas-collecting layer. In this way, hydrogen gas generated in the chamber of the first reactor layer will permeate through the hydrogen-selective membrane into the manifold of the first gas-collecting layer. A burner layer is adjacent to the first reactor layer and separated from the chamber by a first conduction plate. The burner layer includes an intake port and an exhaust port. The intake port is in fluid connection with the retentate port of the first reactor layer.

The invention discloses a preparation method and application of a Pd-based alloy catalyst for hydrogen production from formic acid, and belongs to the field of hydrogen storage materials and hydrogen production. The preparation method comprises the following steps: modifying a carrier (SPP) by using 3-aminopropyltriethoxysilane, so that the carrier is rich in-NH2 groups, and synthesizing the PdX / NH2-SPP (X = Au, Ag, Ir, Mn, Zn and the like) catalyst with superfine Pd alloy nanoparticles by taking palladium salt and other metal salts as metal precursors and adopting an impregnation co-reduction method. No stabilizer needs to be added in the preparation process of the catalyst, and the metal nanoparticles are anchored by virtue of the amino silanized carrier, so that the cost of the catalyst is reduced, the electronic structure and property of an active center can be effectively adjusted, the activity of the catalyst is improved, the service life of the catalyst is prolonged, and the catalytic efficiency of the catalyst is improved; the catalyst shows efficient hydrogen production activity and good hydrogen selectivity.

The invention discloses a fibrous rare-earth-based ceramic reforming hydrogen production catalyst as well as a preparation method and application thereof. The catalyst takes fibrous titanium dioxide ceramic as a carrier, a composite oxide of cerium oxide and nickel oxide as an active component and a composite oxide of copper oxide and molybdenum oxide as a cocatalyst. The catalyst for hydrogen production by reforming is environment-friendly, the H2 selectivity for hydrogen production by reforming methanol at low temperature is high, the preparation process is simple, and the catalyst has a wide market application prospect.

The invention discloses a B-site doped perovskite catalyst as well as a preparation method and application thereof. The catalyst comprises a perovskite matrix, the B site of the perovskite matrix is doped with nickel and transition metal, and the transition metal is selected from any one of iron, manganese, chromium and cobalt. The catalyst has the advantages of being environmentally friendly, economical and high in structural stability, when the catalyst is applied to the catalytic acetic acid steam reforming hydrogen production reaction, the acetic acid conversion rate exceeds 80%, the hydrogen selectivity exceeds 80%, the hydrogen yield exceeds 80% in the catalytic acetic acid steam reforming hydrogen production reaction, the catalyst is high in stability, the structure of the catalyst cannot collapse after the reaction, and the catalyst can be applied to the catalytic acetic acid steam reforming hydrogen production reaction. And the service life is up to 200h.

The invention discloses a method for regulating and controlling hydrogenation selectivity of styrene by double-metal doping, which comprises the following steps: by taking MOF-808 as a model, synthesizing Pt nanoparticles in situ in a pore channel of the MOF-808 as an active center for hydrogenation of phenylacetylene, and replacing a part of Zr clusters of the MOF-808 with two different metals by a two-step microwave method to realize double-metal doping. The activity and the selectivity of phenylacetylene hydrogenation reaction are regulated and controlled under the conditions of normal temperature and normal pressure by adjusting the category and the proportion of bimetal, and finally high-activity conversion of phenylacetylene and high-selectivity product distribution of styrene are realized.

The invention discloses a preparation method of alkyl cyclohexanol, an adopted catalyst and a preparation method of the catalyst.The preparation method belongs to the technical field of synthesis of alkyl cyclohexanol, the catalyst is a nitrogen-doped biomass-based mesoporous carbon-loaded bimetallic catalyst.A high-performance carbon carrier is prepared at low cost through pyrolysis and nitrogen doping processes, and the high-performance carbon carrier is prepared at high temperature; according to the present invention, the supported bimetallic is adopted as the active material, such that the catalyst has the high specific surface area and the high catalytic activity so as to regulate the oxidation state and the catalytic activity of the metal and enhance the reducibility of the metal particles, and the catalyst is used for the alkyl cyclohexanol preparation so as to promote the reaction to the product direction, and effectively improve the hydrogenation selectivity and the product conversion rate.

The invention discloses a metal monolithic catalyst for fuel reforming of a Stirling engine and a preparation method of the metal monolithic catalyst. The method comprises the following steps: performing in-situ oxidation on a FeCrAl honeycomb metal matrix at 950 DEG C to form an Al2O3 nano whisker layer with the diameter of 2-5 microns and the length of 10-20 microns; coating gamma-Al2O3 support slurry on the porous support layer in a dip-coating manner to form a porous support layer; alternately dipping in a cerium nitrate solution and a zirconium nitrate solution, and roasting to construct a Ce0. 75Zr0. 25O2 porous functional layer; and a high-dispersion noble metal active layer is loaded according to the molar ratio of Pt to Rh being 1: 1. The obtained catalyst has high interface bonding strength, high specific surface area and excellent mass and heat transfer performance, can realize high diesel conversion rate and high hydrogen selectivity under the working condition of high-temperature and high-pressure reforming, and shows good carbon deposition resistance and stable operation capability.

This application discloses a fusion reactor ash gas treatment device, belonging to the field of fusion reactor technology. The fusion reactor ash gas treatment device includes: a shell forming a vacuum chamber; a gas supply unit for inputting ash gas into the vacuum chamber; an inductively coupled plasma generator for generating plasma from the ash gas input into the vacuum chamber; a hydrogen selective membrane disposed within the vacuum chamber, dividing the vacuum chamber into a first chamber and a second chamber; the inductively coupled plasma generator is at least partially located in the first chamber; deuterium ions and tritium ions pass through the hydrogen selective membrane into the second chamber and combine to form deuterium-tritium gas; a bias power supply electrically connected to the hydrogen selective membrane for applying a negative bias voltage; a first discharge section connected to the first chamber; and a second discharge section connected to the second chamber. This device achieves rapid treatment and recycling of the ash gas, is not only compact and easy to operate, but also reduces the amount of deuterium-tritium gas retained and energy consumption, improving operational reliability.

The invention discloses an amino-functionalized rodlike silicon dioxide loaded monometal Pd nano-catalyst and application thereof, after rodlike silicon dioxide is subjected to surface modification by 3-aminopropyltrimethoxysilane, a Pd precursor solution and amino-functionalized rodlike silicon dioxide are mixed, and loaded Pd nano-particles are subjected to reduction treatment by sodium borohydride. Compared with a traditional spherical silicon dioxide carrier, the unique morphology of the rod-like silicon dioxide carrier adopted by the catalyst provides a high specific surface area and a short mass transfer channel, the anchoring capacity of Pd nanoparticles is improved through amino functionalization, sintering is inhibited, and efficient and uniform loading and small size control of single metal Pd are achieved. The catalyst is used for room-temperature formic acid decomposition hydrogen production reaction, and shows 100% formic acid conversion rate, 100% hydrogen selectivity, good cycling stability and high initial TOF (Time of Flight) value.