Olivine nickel-based catalyst for preparing hydrogen through autothermal reforming of acetic acid

An autothermal reforming, olivine-type technology, used in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, hydrogen, etc., can solve problems such as catalyst deactivation, achieve reduced selectivity, The effect of improving activity and good thermal stability

Inactive Publication Date: 2014-03-26
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to prepare a kind of A new catalyst with high specific surface area, stable structure, sintering resistance, oxidation resistance and stable activity

Method used

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  • Olivine nickel-based catalyst for preparing hydrogen through autothermal reforming of acetic acid

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Experimental program
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Effect test

Embodiment 1

[0028] Weigh 23.106 grams of Ni(NO 3 ) 2 ·6H 2 O and 115.451 grams of Mg(NO 3 ) 2 ·6H 2 O, add 530 ml of deionized water to make solution #1. Weigh 75.274 grams of NaSiO 3 .9H 2 O, add 270 ml of deionized water to make solution #2. Weigh 10.0 g of NaOH and add it to 130 ml of deionized water to prepare solution #3. Co-precipitate the solution #1 and solution #2 at 75 degrees Celsius, and control the pH of the reaction solution within the range of 10.5±0.5 by controlling the addition rate of solution #3. After the co-precipitation is completed, the suspension Add 10.0 grams of polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123, Mn=5800), stir for 2 hours, transfer to the reactor, and place at 170 degrees Celsius It is maintained in the oven for 36 hours, and then the suspended matter in the reactor is filtered, washed, dried, and calcined at 800 degrees Celsius to obtain the catalyst CUT-HS-N-101 with olivine structure as the main body. Its typic...

Embodiment 2

[0031] Weigh 22.565 grams of Ni(NO 3 ) 2 ·6H 2 O, 54.005 grams of Mg(NO 3 ) 2 ·6H 2 O and 62.696 grams of Fe(NO 3 ) 3 .9H 2 O, add 530 ml of deionized water to make solution #1. Weigh out 63.008 grams of NaSiO 3 .9H 2 O, add 230 ml of deionized water to make solution #2. Weigh 10.0 g of NaOH and add it to 130 ml of deionized water to prepare solution #3. Co-precipitate the solution #1 and solution #2 at 75 ℃, and control the pH value of the reaction solution within the range of 10.5±0.5 by controlling the addition rate of solution #3. After the co-precipitation is completed, the resulting suspension Add 10.0 grams of polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123, Mn=5800), stir for 2 hours, and transfer to the reactor. The subsequent steps are the same as in Example 1, to obtain the catalyst CUT-HS-NF-201, whose typical olivine structure can be figure 1 At the same time, the scanning electron microscope picture shows that the catalyst has a...

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Abstract

The invention relates to an olivine nickel-based catalyst for preparing hydrogen through autothermal reforming of acetic acid. Aiming to solve the problems of low hydrogen yield and oxidation / sintering inactivation of active constituents of the conventional supported nickel-based catalyst in an autothermal reforming process of acetic acid, the invention provides a novel catalyst with the effects of large specific surface area, stable structure, sintering resistance, oxidation resistance and stable activity. The catalyst provided by the invention has a chemical component of MgaFebNicSiO4, wherein a is 1.0-1.7, b is 0-0.7 and c is 0.3-0.5. The nickeliferous catalyst taking an olivine structure as a main body is prepared by a hydro-thermal synthesis method; the catalyst has rich hole structures so that the specific surface area and the dispersity of active constituents of the catalyst are effectively improved; meanwhile, the active constituents, such as nickel and iron, and additives substitute for bivalent magnesium to enter an olivine skeletal structure to effectively refrain the phenomenon of oxidation / sintering inactivation of the catalyst, so that the stability and the hydrogen yield of the catalyst in the autothermal reforming process of acetic acid are improved.

Description

technical field [0001] The present invention relates to a kind of olivine type catalyst that is used for autothermal reforming of acetic acid to produce hydrogen, more specifically, relates to a kind of nickel-based catalyst with olivine structure that is used for autothermal reforming of acetic acid to produce hydrogen, The invention belongs to the technical field of producing hydrogen by autothermal reforming of acetic acid. Background technique [0002] Hydrogen is a clean energy carrier, which is generally produced from fossil raw materials such as coal and natural gas, which has led to an increase in the level of carbon dioxide in the atmosphere. Biomass, obtained by plants through photosynthesis, is an important source of renewable energy, a process that enables carbon cycling. For the utilization of biomass such as straw and forestry by-products, conversion is generally required to increase its energy density. The conversion of biomass often adopts a rapid high-temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C01B3/32
Inventor 黄利宏张方柏段义平钟心燕尚锐淑
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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