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Composite photocatalyst and its application in preparation of hydrogen by biomaterial

A catalyst and composite light technology, which is applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, bulk chemical production, etc., can solve the problems of long hydrogen production time and difficulty in industrialization, and achieve The effect of simple preparation method, less by-products and high hydrogen production efficiency

Inactive Publication Date: 2005-09-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned methods are difficult to realize industrialization due to the long time of hydrogen production, or the requirement of high temperature, high pressure and other conditions.

Method used

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  • Composite photocatalyst and its application in preparation of hydrogen by biomaterial

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Effect test

Embodiment 1

[0033] 2.19 grams of tantalum pentoxide and 0.55 grams of sodium carbonate were mixed, pressed into tablets, calcined at 800°C for 10 hours, pulverized, washed with distilled water until pH = 7.0, filtered, and dried at 30°C. Catalyst A was prepared.

Embodiment 2

[0035] 2.19 grams of tantalum pentoxide and 0.1 grams of bismuth nitrate were mixed, pressed into tablets, calcined at 800°C for 10 hours, pulverized, washed with distilled water until pH = 7.0, filtered, and dried at 30°C. Catalyst B was prepared.

Embodiment 3

[0037] Mix 2.19 grams of tantalum pentoxide, 0.55 grams of sodium carbonate, and 0.1 grams of lanthanum nitrate, press into tablets, calcinate at 800°C for 10 hours, pulverize, wash with distilled water until pH = 7.0, filter, and dry at 30°C. Catalyst C is prepared.

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Abstract

The invention relates to a method for preparing a new compound photocatalyst which can be used for photocataytic catforming hydrogen production in the ultraviolet light. The atomic ratio of said photocatalyst is: A1-xTaO3í†Bx ,wherein X=0-1, A is alkali metal, B is lanthanum or bismuth; the photocatalys can be synthesized through hyperthermy solid phase reaction or sol-gal process, and can load NiO or Pt on the A1-xTaO3í†Bx. The photocatalyst can be used for manufacturing hydrogen in the normal temperature and pressure, and the Na0.96TaO3í†Bi0.0 photocatalys, which is manufactured with X=0.04, can get 10331 ª–mol hydrogen through reforming the amylaceum eight hours in the 1.0wtúÑNiO.

Description

technical field [0001] The invention relates to a composite photocatalyst. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The invention also relates to the use of the catalysts described above. Background technique [0004] In today's society with environmental pollution and energy crisis, the utilization of renewable resources has been highly valued by human society. Biomass, one of the renewable resources, is a general term for organisms produced by photosynthesis, and it has always been one of the important energy sources that human beings rely on for survival. The traditional method of using biomass energy is direct combustion, which has low efficiency in utilizing biomass energy. Therefore, it is necessary to develop methods for efficient utilization of biomass energy. Hydrogen production from biomass has received attention because hydrogen energy is a high-energy density, high-efficiency, and pollution-f...

Claims

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Application Information

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IPC IPC(8): B01J23/20C01B3/32C10J3/00
CPCY02P20/52
Inventor 李灿周国华由万胜雷志斌刘美英
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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