249 results about "Sulfuryl" patented technology

The invention belongs to the technical field of organic synthesis, and particularly relates to a pyroxasulfone preparation method which specifically comprises the following steps: dissolving 3-(5-difluoromethoxy-1-methyl-3-trifluoromethyl-1H-pyrazol-4-ylmethylthio)-5, 5-dimethyl-2-isoxazoline serving as a raw material with a solvent, then adding a boron compound, finally dropwise adding hydrogen peroxide, and reacting at room temperature to obtain the pyroxasulfone. Reacting for several hours to obtain pyroxasulfone; the adopted boron compound is cheap and easy to obtain, so that the use of a transition metal catalyst is avoided, and the raw material cost is reduced; organic acid reagents with heavy odor are not used, waste water and solid waste are less, and the method has great advantages in the aspect of environmental protection; the method is simple to operate, free of complex treatment steps and suitable for industrial production, and when the boron compound is selected from sodium metaborate, sodium perborate or a mixture of borax and sodium metaborate, the yield and purity of the process are higher, and sulfoxide impurities are fewer.

The invention relates to the technical field of water pollution treatment, and discloses a sulfur autotrophic denitrification filler for nitrogen wastewater treatment and a preparation method thereof.The sulfur autotrophic denitrification filler comprises composite particles capable of being degraded step by step, and the composite particles are synergistically limited by chemical compositions and microscopic physical structures; the main alkali source calcium-based carbonate and the sacrificial alkali source magnesium-based oxide establish an interface self-updating mechanism by utilizing the reaction rate difference; physically, a pore structure composed of a reaction chamber and a throat is built in the filler, self-cleaning of an endogenous mass transfer channel is achieved through denitrification product nitrogen, and through internal cooperation of chemical and physical mechanisms, the problems of interface passivation and pore silting self-locking of traditional sulfur-based filler caused by reaction products are solved; the active self-updating and long-term stable operation capabilities of the filler are realized, so that the application potential of a cheap alkali source is released.

The application discloses a kind of water-soluble sulphur-based compound fertilizer preparation method, belong to compound fertilizer technical field.The steps include as follows:(1) in reaction kettle, concentrated sulfuric acid and potassium chloride are reacted under heating condition, reaction temperature is 105-115 DEG C, reaction time is 25-45 minutes, slurry is sent to cooling kettle;(2) in cooling kettle, temperature is reduced to 40-60 DEG C, slurry is sent to mixed acid tank;(3) in mixed acid tank, add dilute phosphoric acid, potassium bisulfate solution and slurry, reaction temperature is 65-75 DEG C, slurry is sent to tubular reactor;(4) in tubular reactor, add ammonia, washing liquid and slurry, reaction temperature is 150-180 DEG C, slurry is sent to granulator;(5) in granulator, add alkaline compound fertilizer raw material, return material and slurry for granulation, granulation temperature is 80-95 DEG C, return material ratio is 1:1.5-2.0;(6) the granules obtained from granulator are cooled and screened to obtain product.

The invention discloses a preparation process of polyether-ether-ketone, and relates to the technical field of preparation of inorganic compounds. The preparation process comprises the following steps: reacting 4, 4 '-difluorobenzophenone, sodium carbonate and hydroquinone to generate polyether-ether-ketone, taking a polyaryletherketone block oligomer as an end-capping reagent, reacting 4, 4'-difluorobenzophenone with 4, 4 '-dimercaptodiphenyl sulfone, and then reacting with pentaerythritol phosphate to obtain the polyaryletherketone block oligomer. The thioester bond reversibly breaks at the polymerization temperature, exposed active sulfenyl reacts with hydroxyl at the tail end of the polyether-ether-ketone to form a more stable covalent bond, volatilization of the end-capping reagent is avoided, meanwhile, the initial decomposition temperature of the end-capped polyether-ether-ketone is increased, and the stability of the end-capping reagent is improved. The polyether-ether-ketone generated in the polyether-ether-ketone resin product is subjected to treatment procedures of crushing, organic solvent extraction, water washing, filtering, drying and the like, so that the product polyether-ether-ketone is obtained, less three wastes are generated, the solvent can be recycled, the atom economy is relatively high, and the preparation process of comprehensive utilization of resources is realized.

The invention relates to the technical field of sewage treatment, and discloses a preparation method of a porous ceramic loaded sulfur-based composite filler and application of the porous ceramic loaded sulfur-based composite filler in nitrogen and phosphorus removal of sewage. Porous ceramic is taken as a carrier, active components are loaded in a layered manner by adopting a gradient filling process, an inner-layer siderite composite gel and calcite complex dynamically neutralizes H < + > generated by sulfur autotrophy, and pH buffering is realized through sulfo group reversible proton exchange; the compressive strength of the middle-layer pyrite composite gel is improved through C-O-Fe bonding, a Pi-Pi conjugate electron pathway is constructed by polypyrrole-coated hybrid gel, electron transfer is accelerated, and Fe < 2 + > is released to precipitate phosphate; sulfur-charcoal on the outer layer forms nano sulfur crystals, and denitrification is quickly started by utilizing a high specific surface area. Sulfur consumption and sulfate accumulation are reduced through sulfur-iron oxidation-reduction circulation. The filler realizes high-efficiency nitrogen and phosphorus removal of sewage under the condition that a carbon source and a pH regulator are not required to be additionally added.

The invention provides a synthesis method of a thioether ligand and a palladium-catalyzed 2-aryl indole compound, and designs an application of the biphenyl thioether ligand and a palladium catalyst in preparation of the 2-aryl indole compound. Indole and arylboronic acid are subjected to a reaction under the action of a palladium catalyst and a biphenyl sulfide ligand, and the structural formula of the biphenyl sulfide ligand is shown in the specification. Ar is phenyl, furyl, thienyl, naphthyl or phenyl substituted by one or more substituent groups; r1 is methyl, methoxyl, fluorine atom, chlorine atom, bromine atom or methyl ester group; r2 is the same or different and is methyl, ethyl, isopropyl, isobutyl, cyclohexyl, benzyl, n-butyl or n-hexyl; r3 is alkoxy, alkylthio, substituted amino or halogen; the palladium catalyst is a divalent palladium compound.

The application discloses a biological electrochemical auxiliary sulfur conversion promoting sulfur-based denitrification and sulfate emission reduction method and belongs to the field of water treatment. ‑ Nitrogen-containing wastewater enters an elemental sulfur denitrification system, and NO3 0 is reduced to N2 by sulfur autotrophic denitrifying bacteria, and elemental sulfur (S 2‑ ) is converted into SO4 2‑ . Effluent enters a cathode chamber of an electrochemical auxiliary sulfate reduction system, and hydrogen autotrophic sulfate reducing bacteria utilize cathode hydrogen production to reduce SO4 ‑ to HS 2‑ , and meanwhile, alkalinity produced by cathode hydrogen production neutralizes acidity produced in the denitrification process in the elemental sulfur denitrification system. ‑ HS 2‑ / supernatant is returned to the elemental sulfur denitrification system to react with S 0 to generate polysulfide (S n 2‑ ), S n 2‑ , which is used as an efficient electron donor to participate in denitrification, thereby significantly improving denitrification efficiency. The application does not need to add an organic carbon source, sludge production is small, high-concentration nitrogen-containing wastewater is efficiently treated, and the content of sulfate in effluent is simultaneously reduced, thereby realizing sulfur resource recycling, and the application is an economic and environment-friendly autotrophic denitrification method.

The application discloses a kind of special sulfur-based compound fertilizer of leaf vegetable, preparation method and device, belong to compound fertilizer preparation technical field.The preparation of the compound fertilizer includes the following steps: sulfur, anhydrous ethanol are mixed and stirred, constant temperature oscillation, stand until clear state, take supernatant and mix with distilled water, oscillation, add sodium dodecyl sulfate, oscillation, add coating agent, oscillation, obtain material B, stand by;Ammonia is introduced into phosphoric acid to adjust to pH 4.3-4.8, filter pressing, collect filtrate to obtain feed liquid D;Material B is filtered, and the filter residue is collected and mixed with feed liquid D, guar gum and locust bean gum are added, oscillation is carried out, a mixed slurry is obtained, granulation is carried out, drying is carried out, screening is carried out, and cooling is carried out, to obtain the compound fertilizer, improve the sulfur and phosphorus ammonium slurry combination degree, avoid the loss of fertilizer efficiency, prevent the occurrence of safety hazards.

This invention relates to the field of catalyst technology, specifically to a latent epoxy resin curing catalyst with precisely controllable activity and its preparation method. The catalyst is 1-(2-(N-tert-butyl-N'-phenylurea)ethyl)-3-(2-(phenyldithio)ethyl)imidazolium, which simultaneously possesses an imidazolium ring catalytic active center, a thermally hindered urea bond, a temperature-responsive dynamic disulfide bond, and an intramolecular hydrogen bond unit. Precise control of catalytic activity is achieved through the synergistic effect of these triple dynamic bonds. The catalyst exhibits excellent storage stability at room temperature, rapid curing at activation temperature, and is free of metal ions. The cured epoxy resin exhibits good dielectric properties. This invention's catalyst achieves a balance between excellent latency and rapid curing performance through the synergistic control of these triple dynamic bonds. It possesses excellent dielectric and mechanical properties, can be compounded with various curing agents, and its preparation method is simple and easy for industrial production.

The application discloses a method for preparing a composite sulfur-based catalyst from waste nickel-cobalt-manganese ternary material and application thereof, and belongs to the field of lithium-oxygen battery catalysts. The method comprises the following steps: (1) dispersing waste ternary positive electrode powder in an aqueous solution of an organic acid to obtain a dispersion liquid, heating, adding an aqueous hydrogen peroxide solution, stirring, and performing suction filtration to obtain a leaching solution; (2) mixing thiourea, a surfactant and the leaching solution to obtain a reaction liquid; and (3) placing the reaction liquid and carbon cloth in a sealed container, reacting, cleaning, and drying to obtain a composite sulfur-based catalyst. The composite sulfide of the three transition metals (Ni, Co and Mn) recovered by the method has a catalytic effect on the charging process of a lithium-oxygen battery, and can greatly improve energy efficiency.

The invention provides a preparation method of 2-acrylic acid 2-(2-naphthalenethio) ethyl ester, which comprises the following steps: (1) adding 2-thionaphthol, a first reactant and a catalyst into a first solvent, reacting at 110-140 DEG C for 4-10 hours, and washing with water to obtain 2-naphthyl sulfide ethanol; and (2) adding 2-naphthyl sulfide ethanol and a reaction aid into a second solvent, dropwise adding a second reactant, and reacting at 0-30 DEG C for 2-10 hours to obtain the 2-naphthyl sulfide ethanol, wherein the first reactant is 2-halogenated ethanol, ethylene oxide or ethylene carbonate and derivatives thereof; the second reactant is acryloyl chloride, alpha-methacryloyl chloride or a mixture of acrylic acid and phosphorus oxychloride. The preparation process is safe and simple, the cost is low, the reaction conditions are mild, the reaction polymerization can be effectively controlled, the post-treatment flow is simple, and industrialization is easy.

This positive electrode mixture contains a conductive auxiliary agent which is a carbon material, a sulfur-based active material, and a sulfide solid electrolyte. A relaxation time T1 derived by 7Li-NMR is longer than 0.23 s and shorter than 0.41 s.

The invention provides an indole compound and a solar cell. The indole compound has a structural formula as shown in a formula (I). At least one of R1-R7 has a structure as shown in a formula (Hy1): L1 is any one of substituted or unsubstituted C6-C30 arylene, substituted or unsubstituted C3-C30 heteroarylene, substituted or unsubstituted C1-C30 alkylene, substituted or unsubstituted C1-C30 alkyleneoxy and substituted or unsubstituted C1-C30 alkylenesulfenyl, and R8 is any one of a phosphate group, a carboxylic acid group and a sulfonic acid group; when R1-R7 do not represent the structure represented by formula (Hy1), R1-R7 represent the structure represented by formula (Hy1); a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C1-C30 alkoxy group, a substituted or unsubstituted C1-C30 alkylthio group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 arylamino group, a substituted or unsubstituted C3-C30 heteroaryl group, a substituted or unsubstituted C3-C30 heteroarylamino group, a substituted or unsubstituted C3-, each independently selected from hydrogen, halogen, nitro, hydroxyl, substituted or unsubstituted C1-C30 alkyl group, substituted or unsubstituted C1-C30 alkoxy group, substituted or unsubstituted C1-C30 alkylthio group, substituted or unsubstituted C6-C30 aryl group, substituted or unsubstituted C3-C30 heteroarylamino group, substituted or unsubstituted C3- and C12 cycloalkyl is selected from any one of C12 cycloalkyl.

The present application relates to the fine chemical technology field, specifically to a kind of preparation of bis (4-tolyl sulfenyl) di-deuteromethane method.The domestic research and synthesis of bis (4-tolyl sulfenyl) di-deuteromethane are less reported, only a few foreign literatures provide corresponding preparation method.Aiming at the above problems, the present application provides a kind of preparation of bis (4-tolyl sulfenyl) di-deuteromethane method, the present application is reacted by 4-methyl phenyl sulfenol and 1-(chloro di-deuteromethyl)-1,4-diazabicyclo [2.2.2] octane-1-ammonium chloride in the acetonitrile solution containing HI, bis (4-tolyl sulfenyl) di-deuteromethane is successfully prepared, the synthetic route of the present application is simple and efficient, raw material is easy to obtain, and has good commercial value.

The present application relates to a process for the preparation of pyroxasulfone comprising reacting 3-[(5-difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl) methylthio]-4, 5-dihydro-5, 5-dimethylisoxazole with hydrogen peroxide in the presence of a metal catalyst wherein the solvent comprises at least one carbonate and water.

The invention relates to cyclotrithio-tri (2-mercaptoethylthio) mercaptan as shown in a formula I and a preparation method and application thereof. A two-step method of thio reaction and nucleophilic substitution is adopted. In the step I, thiourea is used as a sulfur source, epoxy atoms in trioxymethylene are replaced by sulfur atoms one by one under the condition of strong acid, and 1, 3, 5-trithiacyclohexane is generated. In the nucleophilic reaction of acid catalytic activation in the step II, 1, 3, 5-trithioxane and Lewis acid are subjected to coordination complexation firstly, one sulfydryl in dithiol serves as a nucleophilic reagent to attack an electrophilic carbon center of a ring-opening intermediate, a new C-S bond is formed, and a linear intermediate containing sulfydryl is generated; according to the process, three thiol groups are introduced in sequence step by step, and sulfur alkylation substitution is completed. The obtained product has the characteristics of high purity, high light transmittance and large refractive index, and can be used for preparing optical materials with ultrahigh refractive index and high light transmittance.

The present application relates to a kind of sulfur-based magnesium-containing autotrophic nitrogen and phosphorus removal biological carrier and its preparation method and application, belong to water deep processing field.The sulfur-based magnesium-containing autotrophic nitrogen and phosphorus removal biological carrier includes matrix material and active material distributed in the inside and / or at least part of surface of the matrix material;The matrix material includes elemental sulfur and sulfur compound;The active material includes basic magnesium-containing compound and / or mineral containing basic magnesium-containing compound.The sulfur-based magnesium-containing autotrophic nitrogen and phosphorus removal biological carrier has the ability of easy-to-use sulfur form by denitrification process and automatic adjustment system pH value, realizes deep denitrification and nitrogen removal, and the dissolved magnesium ion is transported into cell by improving ammonia nitrogen efficiency and forms phosphate precipitate, and the carrier is endowed with the function of efficient removal of ammonia nitrogen and phosphate.The sulfur-based basic magnesium-containing functional material provided by the present application is applied to deep processing or ecological buffer zone and other scenes, and can realize the coordinated deep removal of nitrate nitrogen, ammonia nitrogen and phosphate, and has wide application prospect.

The application provides an electrolyte and a battery comprising the electrolyte, wherein the electrolyte comprises a sulfuryl bipyridine compound as a first additive, the first additive has a lower LUMO orbital and a higher HOMO orbital, is easy to be oxidized and reduced, and generates an interface film on the surface of the positive and negative electrodes, the interface film has the characteristics of high inorganic component content, high stability, and rich in S atoms and N atoms, can improve the transmission efficiency of lithium ions, and thus can improve the cycle performance of the battery; meanwhile, the first additive and the pyridine derivative which has formed a film are easy to have a polymerization reaction under the limit working condition of thermal shock, delay the short circuit of the positive and negative electrodes, block the aggravation of the side reaction, and effectively improve the thermal shock performance.

Compositions including zinc salts of sulfur-based accelerators, combinations of zinc salts of sulfur-based accelerators, and golf ball cores made from such compositions are disclosed. The type and concentration of components in the composition affect the properties of cores made therefrom, including, for example, coefficient of restitution and compression, and, thus, can be used to produce golf balls having desirable performance characteristics.

This manufacturing method for a sulfur-based active material-electron conductive material composite includes mixing, stirring and heating a sulfur-based active material and an electron conductive material having pores in a single process.

The present invention addresses the problem of providing a light-emitting material which has a large band gap and exhibits thermally activated delayed fluorescence, and provides a fused ring compound which is characterized by being represented by general formula (1). Each R independently represents hydrogen or is selected from the group consisting of an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, an alkylthio group having 1-10 carbon atoms, an alkylamino group having 1-10 carbon atoms, an acyl group having 2-10 carbon atoms, an aralkyl group having 7-20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6-30 carbon atoms, and a substituted or unsubstituted aromatic hydrocarbon group having 3-3 carbon atoms and a monovalent substituent in the 30 aromatic 6-membered heterocyclic group and adjacent substituents may be integrated to form a ring.

The invention relates to the technical field of carbon monoxide catalysts, in particular to a water-resistant sulfur-resistant Pt-based catalyst and a preparation method thereof. The catalyst is prepared by the method. The method comprises the following steps: S1, preparing a CZ carrier; step S2, loading an active component Pt; s3, doping an auxiliary agent lanthanide oxide to obtain the sulfur-resistant Pt-based catalyst, and S4, performing hydrophobic modification to obtain the water-resistant and sulfur-resistant Pt-based catalyst containing the hydrophobic layer. According to the present invention, the water-resistant and sulfur-resistant Pt-based catalyst resistant to sulfur dioxide and water vapor can be prepared, and the active component Pt in the catalyst is uniformly and firmly combined on the CZ carrier so as to solve the problem of catalytic activity reduction caused by Pt nano-particle migration and agglomeration under the gas flow impact effect of the steel plant high-temperature sintering flue gas.

The application discloses a method for industrial production of sulindac. The method comprises the following steps: condensation reaction of compound 1 (5-fluoro-2-1-(4-methylthio benzyl) indene) and glyoxylic acid under catalysis of an organic base (benzyl trimethyl ammonium hydroxide) to generate compound 2, isomerization reaction of the compound 2 under hydrobromic acid-acetic acid solution to generate compound 3, which greatly improves reaction conversion rate and yield, reduces three waste problems, and finally obtains compound 4 (sulindac crude product) through oxidation of the obtained compound 3 by hydrogen peroxide, and high-purity sulindac is obtained through recrystallization of the crude product by isopropyl alcohol. The raw materials and reagents used in the preparation process of the sulindac are relatively cheap and low in cost, the whole preparation process is mild in reaction condition, simple and safe in operation, and convenient for industrial production.

This invention provides a method for preparing a sulfur-based composite material with a self-healing functional layer coating, and this method significantly improves the electrochemical performance of the sulfur-based composite material. The method includes: dispersing an amino-structured compound containing polyethylene glycol (PEG) segments, an aldehyde-structured compound, and the sulfur-based composite material in a solvent in a certain proportion; and initiating a Schiff polymerization reaction of the aldehyde and amino groups by adding an appropriate amount of catalyst to generate a porous polymer containing imino groups, thereby forming an ultrathin, self-healing coating layer in situ on the surface of the sulfur-based composite material. This technology greatly alleviates the negative impact of the volume expansion and shuttle effect of the sulfur-based composite material on the battery, improving the battery's cycle performance and rate performance.

The present embodiment relates to a manufacturing method of a laminate and the like, and the manufacturing method of the laminate includes: a preparation step of preparing a processing object, the processing object being a laminate before processing provided with a light shielding film, and a carbonic acid water cleaning step of preparing a cleaned laminate by applying a carbonic acid water cleaning process of applying ultraviolet rays and carbonic acid water to the processing object; wherein the light shielding film contains a transition metal, and further contains oxygen, nitrogen, or carbon, the laminate has a residual ion content determined by ion chromatography, the residual ions include a sulfur-based ion and a nitric acid-based ion, the content of the sulfur-based ion is greater than 0 ng / cm 2 and equal to or less than 0.1 ng / cm 2 , the content of the nitric acid-based ion is greater than 0 ng / cm 2 and equal to or less than 0.1 ng / cm 2 . The present embodiment can minimize the performance variation of the laminate, remove particles and the like existing on the outer surface or surface of the laminate, and effectively suppress unexpected haze generated in the exposure process.

The invention relates to a composite comprising at least one reinforcing element having a surface comprising a copper-zinc alloy, said reinforcing element being embedded in an elastomeric composition based on at least one diene elastomer, a reinforcing filler, a sulfur-based crosslinking system comprising a metal oxide, stearic acid or one of its derivatives and a vulcanization accelerator, and a phenol-aldehyde resin based on: - at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in meta positions relative to each other, the two ortho positions of at least one of the hydroxyl functions being unsubstituted, and - at least one dialdehyde compound comprising two aldehyde functions, in which the phenol-aldehyde resin content ranges from 0.5 to 2 parts per million, and the mass ratio of metal oxide to stearic acid or one of its derivatives is greater than or equal to 8.

According to the preparation method of sulfoxaflor, provided by the invention, 3-[1-(methylthio) ethyl]-6-(trifluoromethyl) pyridine is taken as a raw material, and is subjected to an S-imidization reaction in the presence of DPPH and an ionic liquid [Bmin] BF4 to prepare a sulfimide compound B; the sulfoxaflor is finally prepared through an N-cyanation reaction of the sulfoxaflor compound B and AIBN in the presence of cuprous iodide, potassium carbonate and [Bmin] BF4, the preparation method of the sulfoxaflor is short in synthesis route, the ionic liquid is creatively used as the reaction solvent, the sulfoxaflor is more environmentally friendly, the reaction can be promoted, and the preparation method of the sulfoxaflor is suitable for industrial production. The reaction time is shortened, and the target product can be prepared with high yield (the total yield of two steps is 81% or above) and high purity (99.5%).

A porphyrin compound for bioimaging and sonodynamic therapy, as well as its preparation method and application, has a chemical formula shown in Formula 2. The preparation method comprises the following steps: adding p-methylthiobenzaldehyde, a compound of Formula 1, and pyrrole to a reaction flask, evacuating the flask and introducing nitrogen gas, followed by adding anhydrous dichloromethane to obtain a reaction solution; bubbling nitrogen gas through the reaction solution, stirring at 25°C, adding boron trifluoride etherate, maintaining the temperature while continuing to stir, adding DDQ, continuing stirring, adding triethylamine, filtering, concentrating, and purifying to obtain the target product. This method features mild reaction conditions, a short reaction time, and simple operation. The resulting porphyrin compound exhibits excellent sonosensitivity and biocompatibility, can efficiently generate reactive oxygen species under ultrasound, and can produce excellent sonodynamic effects. The compound also exhibits fluorescence emission in the near-infrared region and can be excited by visible light, enabling confocal imaging to detect changes in cell morphology before and after, resulting in excellent bioimaging results. #imgabs0#

The invention relates to a polyamide composition as well as a preparation method and application thereof. The polyamide composition is prepared from the following components in parts by weight: 77 to 97 parts of polyamide resin, 3 to 23 parts of a toughening agent, 0.08 to 0.6 part of an antioxidant A, 0.08 to 0.6 part of an antioxidant B and 0.08 to 0.6 part of a copper salt heat stabilizer. The antioxidant A is a sulfur-containing antioxidant, and the sulfur-containing antioxidant has a thiocarbonyl thio group (-C (= S)-S-); the antioxidant B comprises a phosphite ester antioxidant and / or a hindered phenol antioxidant. According to the toughened polyamide composition, the sulfur-containing antioxidant with thiocarbonyl sulfenyl is introduced and is matched with the phosphite antioxidant and / or the hindered phenol antioxidant and the copper salt heat stabilizer, so that the thermo-oxidative aging resistance of the toughened polyamide composition is jointly improved.

The present application relates to the technical field of porphyrin-based covalent organic framework material preparation, in particular to a mild preparation method of acetaldehyde-based porphyrin covalent organic framework and application thereof, which comprises the following steps: step one: dispersing ligand 2', 5'-bis((ethyl sulfide) methyl)-[1,1':4',1''-triphenyl]-4,4''-diamine in acetonitrile solution to obtain solution A, and dissolving acetaldehyde-based porphyrin in dichloromethane to obtain solution B; step two: mixing solution A and solution B; step three: adding ferric chloride and acetic acid as catalysts to react under mild conditions to obtain acetaldehyde-based porphyrin covalent organic framework material, which has excellent gaseous iodine adsorption performance. The synthesis method provided by the present application has mild conditions, simplifies the high-temperature time-consuming shortcomings of traditional porphyrin-based covalent organic framework material synthesis, and realizes the synthesis of special ligand covalent organic framework.