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Method for preparing hydrogen CO with concentration by reforming methyl alcohol and biomass derivative in photocatalysis manner

A technology of biomass and derivatives, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as high content, limited hydrogen production activity, and no CO selectivity issues involved. Achieve the effect of improving hydrogen production activity and inhibiting CO production

Inactive Publication Date: 2014-06-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the research on multi-component cocatalysts is only limited to the hydrogen production activity, and has not involved the CO selectivity issue.
However, the CO-selective co-catalyst only stays in the research of a single component and the content is still relatively high.

Method used

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  • Method for preparing hydrogen CO with concentration by reforming methyl alcohol and biomass derivative in photocatalysis manner
  • Method for preparing hydrogen CO with concentration by reforming methyl alcohol and biomass derivative in photocatalysis manner
  • Method for preparing hydrogen CO with concentration by reforming methyl alcohol and biomass derivative in photocatalysis manner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] High temperature roasting method TiO 2 Sample preparation:

[0034] Weigh 1.0g of commercial P25 titanium oxide, roast it in a muffle furnace at 700°C in an air atmosphere for 3h, increase the temperature at a rate of 5°C / min, and drop it to room temperature naturally to obtain catalyst Cat 0, figure 1 Its XRD diffraction pattern.

Embodiment 2

[0036] Preparation of two-component cocatalysts by in situ photodeposition and evaluation of their photocatalytic reactions

[0037] In 200mL, 20vol% methanol solution, add 0.1g Cat 0 and a metal precursor with a single-component metal content of 0.1wt%. The amount added is: 0.169mL PdCl 2 solution (0.59mg / mL), and 0.138mL Ni(NO 3 ) 2 solution (0.725mg / mL), 0.136mL AgNO 3 solution (0.737mg / mL), 0.435mL HAuCl 4 solution (0.23mg / mL), 0.521mL RhCl 3 solution (0.192mg / mL), 0.170mL RuCl 3 solution (0.588mg / mL) and 0.366mL Na 2 IrCl 6 One of the solutions (0.273mg / mL). After the air in the system was evacuated, a 300W xenon lamp was used as the light source for photocatalytic reaction. Among them, the cocatalyst is deposited on Cat 0 within a few minutes in the initial stage of the reaction to obtain catalysts Cat1~7, and the corresponding cocatalyst components are: Cat 1, Pd; Cat 2, Pd-Ni; Cat 3, Pd-Ni Ag; Cat 4, Pd-Au; Cat 5, Pd-Rh; Cat 6, Pd-Ru; Cat 7, Pd-Ir. The gas p...

Embodiment 3

[0039] Preparation of two-component cocatalyst by impregnation method

[0040] Weigh 0.1g Cat 0, add a metal precursor with a single-component metal content of 0.1wt% and an appropriate amount of deionized water once. (The amount of metal precursor added is: 0.169mL PdCl 2 solution (0.59mg / mL); or 0.169mL PdCl 2 solution (0.59mg / mL), and 0.138mL Ni(NO 3 ) 2 solution (0.725mg / mL), 0.136mL AgNO 3 solution (0.737mg / mL), 0.435mL HAuCl 4 solution (0.23mg / mL), 0.521mL RhCl 3 solution (0.192mg / mL), 0.170mL RuCl 3 solution (0.588mg / mL) and 0.366mL Na 2 IrCl 6 Solution (0.273mg / mL) impregnated and stirred for 3h, the solution was evaporated to dryness in a water bath at 80°C, after grinding, the catalyst precursor was placed in a tube furnace under a hydrogen atmosphere and roasted at 350°C for 2h (100% hydrogen, flow rate 100mL / min), the catalyst Cat 1'-7' was obtained. The corresponding metal components are: Cat 1', Pd; Cat 2', Pd-Ni; Cat 3', Pd-Ag; Cat 4', Pd-Au; Cat 5', P...

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Abstract

The invention provides a method for improving the catalyst activity of a hydrogen generated by reforming methyl alcohol and a biomass derivative in a photocatalysis manner and lowering the concentration of CO in the hydrogen to a minimum extent. According to the method, the activity of the generated hydrogen is greatly improved by regulating and changing the type and the matching of multicomponent cocatalysts which contain metals and metallic oxides and are carried on TiO2; and meanwhile, the generation of the CO is inhibited, wherein compared with the TiO2 which is not carried with the cocatalysts, the activity of the generated hydrogen of the TiO2 carried with the cocatalysts is improved by more than 20 to 90 times; and particularly, the concentration of the CO in the obtained hydrogen can be decreased below 5ppm. The technology provided by the invention can be applied to the preparation of a hydrogen energy source with an ultralow CO concentration by utilizing solar energy and a biomass at a normal temperature and a normal pressure and under an anaerobic condition so as to meet the requirements of fuel cells and the like.

Description

technical field [0001] The invention relates to the application of metal multi-component co-catalysts in the production of hydrogen from photocatalytic reforming of methanol and biomass derivatives, specifically a method for producing hydrogen from photocatalytic reforming of methanol and biomass derivatives through co-catalyst modulation. Ultra-low CO concentration hydrogen technology. Background technique [0002] As a clean energy, hydrogen has the advantages of high combustion value and zero pollution emission, and is often used as a hydrogen source for fuel cells. At the same time, it is also a commonly used industrial raw material, widely used in synthetic ammonia, petroleum hydrocracking, and metallurgical industries. At present, using non-renewable fossil resources as raw materials is the main way to produce hydrogen. The use of fossil energy has brought about an increasingly serious energy crisis and environmental problems. Therefore, the development of renewable...

Claims

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Application Information

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IPC IPC(8): C01B3/32B01J23/44B01J23/89B01J23/50B01J23/52B01J23/46
CPCY02P20/133
Inventor 李灿马艺种瑞峰徐倩章福祥韩洪宪蒋宗轩
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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