81results about How to "Facilitate industrial scale-up" patented technology

The present invention relates to a preparation method of a catalyst for ethylene preparation through oxidative dehydrogenation of ethane, wherein the catalyst comprises an active component, an auxiliary agent, and a carrier. The preparation method comprises: preparing a catalyst precursor A, and reducing the catalyst precursor A; dissolving an auxiliary agent precursor in water, and uniformly mixing with a furfural aqueous solution; adding the obtained mixture and the catalyst precursor A to a high pressure reaction kettle, adding a solution C, and carrying out a reaction; and treating and separating the obtained solid-liquid mixture, filtering the obtained solid sample, drying, and calcining to obtain the catalyst. According to the present invention, the waste residue oil hydrotreating catalyst is completely utilized so as to save the cost; and the prepared catalyst has characteristics of high reaction activity, metal consumption reducing, and ethylene selectivity improving.

The invention discloses controllable crystalline form titanium dioxide and a graphite alkene composite material with high efficient photoelectricity activity and a preparation method thereof. The composite material is formed by mixing TiO2 powder and graphite alkene or scattering the TiO2 powder in oxidized graphite alkene dispersing agents to perform hydro-thermal reaction. The mass ratio of TiO2 powder and graphite or graphite alkene is 1:1 to 500:1. The preparation method is simple, low in cost and environmental-friendly. The controllable crystalline form titanium dioxide and a graphite alkene composite material with high efficient photoelectricity activity can control crystalline form of the obtained TiO2 according to the ratio of alcohol and water or amount of titanium sources. When the amount is amplified, the controllable crystalline form titanium dioxide and a graphite alkene composite material with high efficient photoelectricity activity have good performances. After the graphite alkene is composed, photocatalysis is greatly improved. All obtained products are applied to fields of dye sensitization solar cells, catalysts, lithium ion cells, sensing and the like.

The invention discloses a periodic peristaltic agitation method from the point of bionics and according to the principle of intestinal peristalsis and periodic stimulation effect. One or more devices generating periodic peristalsis is distributed in a reactor. The internal part of the device is isolated from materials in the reactor by using elastic materials. The elastic materials are controlledto be periodically expanded and contracted through the movement of the materials in the device. When the elastic materials are expanded, the points of the elastic materials in contact with the materials move along the direction of the materials to generate normal acting force which is perpendicular to the movement direction and is applied to the materials, so materials move along the direction ofthe normal acting force under the pushing effect of the acting force; and when the elastic materials are contracted, the movement direction of the materials is reverse. Thereby, with the periodic expansion and contraction of the materials in the device, the materials in the reactor alternately do peristaltic movement under the periodic normal acting force. The method strengths heat transfer and mass transfer through the normal acting force, is suitable for reactors for chemical industry, microorganism fermentation, cell culture and the like and can be industrially scaled.

The present invention relates to a preparation method of a catalyst for hydrogen preparation through reforming of methane and water vapor, wherein the catalyst comprises an active component, an auxiliary agent, and a carrier. The preparation method comprises: preparing a catalyst precursor A, and reducing the catalyst precursor A; dissolving an auxiliary agent precursor in water, and uniformly mixing with a furfural aqueous solution; adding the obtained mixture and the catalyst precursor A to a high pressure reaction kettle, adding a solution C, and carrying out a reaction; and treating and separating the obtained solid-liquid mixture, filtering the obtained solid sample, drying, and calcining to obtain the catalyst. According to the present invention, the waste residue oil hydrotreating catalyst is completely utilized so as to save the cost; and the prepared catalyst has characteristics of high reaction activity, metal consumption reducing, and product selectivity improving.

The invention relates to a method for preparing a catalyst for preparation of natural gas by methanation of a synthetic gas, the catalyst comprises a first active component, a second active components, a first aid, a second aid and a carrier; the method for preparing the catalyst comprises the following steps: firstly, preparing a catalyst precursor B, then reducing the catalyst precursor B, mixing evenly a solution C and a furfural aqueous solution, adding the solution C, the furfural aqueous solution and the catalyst precursor B into a high-pressure reaction kettle, adding a solution D for reaction, processing and separating a solid and liquid mixture, filtering the obtained solid sample, drying and roasting to obtain the catalyst. The catalyst prepared by the method has high reaction activity, the metal use amount is reduced, and the selectivity of methane is improved.

The invention discloses a TiNb alloy surface treatment method. The TiNb alloy surface treatment method comprises the steps that 1, a TiNb alloy sheet is polished to be bright to be then subjected to ultrasonic oil removal, and natural drying is carried out after rinsing; 2, silver nitrate and calcium nitrate are dissolved in a hydrogen peroxide solution to obtain a mixed solution; 3, the mixed solution is added into a hydro-thermal synthesis reaction still, and the air-dried TiNb alloy sheet is placed in the hydro-thermal synthesis reaction still to be then placed into an oven for a hydrothermal reaction; and 4, rinsing and air drying are carried out after the TiNb alloy sheet is taken out, and the TiNb alloy sheet with the surface coated with a TiO2 film is obtained. The method can be realized at a relatively low temperature, and the problem of deterioration of the mechanical properties of a titanium alloy matrix due to a conventional heat treatment method is solved. A TiO2 film material prepared by the method has the good biological activity and can rapidly induce hydroxyapatite to deposit on the surface in simulated body fluid. In addition, elementary substance Ag is uniformly distributed in the TiO2 film, and the excellent antibacterial ability is given to the film material.

The invention discloses a method for separating iridium and platinum through polystyrene-4-methylthiazole sulfoxide resin, and belongs to the technical field of platinum group metal separation. The method comprises the steps that the polystyrene-4-methylthiazole sulfoxide resin (PS-4-MTS for short) is used as an adsorbent, Ir(IV) in a 0.1-0.5 mol / L hydrochloric acid medium is adsorbed according to the solid-liquid ratio of 1:50(g / mL), the PS-4-MTS adsorbs Ir in an Ir and Pt mixed solution, Pt is reserved in a water phase, and Ir on the resin is desorbed through an 0.5%-1% NaOH solution. Ir and Pt are separated through the adsorbability difference of the PS-4-MTS adsorbent for Ir and Pt, the operation process is simple and environmentally friendly, the Ir and Pt separation coefficient is high, and the PS-4-MTS adsorbent is good in stability and capable of being reused.

The present invention relates to a preparation method of a catalyst for hydrogen preparation through reforming of methane and water vapor. The catalyst comprises an active component, an auxiliary agent, and a carrier. The preparation method comprises: preparing a catalyst precursor B, and reducing the catalyst precursor B; dissolving an auxiliary agent precursor in water, and uniformly mixing with a furfural aqueous solution; adding the obtained mixture and the catalyst precursor B to a high pressure reaction kettle, adding a solution D, and carrying out a reaction; and treating and separating the obtained solid-liquid mixture, filtering the obtained solid sample, drying, and calcining to obtain the catalyst. According to the present invention, the catalyst has characteristics of high reaction activity, metal consumption reducing, and product selectivity improving.