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TiO2 photocatalyst for photocatalytic reforming biomass hydrogen preparation and preparation and application

A photocatalyst and biomass technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve complex equipment, high energy consumption, cumbersome process, etc. problem, to achieve the effect of inhibiting the generation of carbon monoxide, improving the activity of hydrogen production, and strong universality

Inactive Publication Date: 2010-11-17
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

[0006] (1) Electrolysis of water to produce hydrogen, this method consumes a lot of energy and has a low overall utilization rate of energy;
[0007] (2) Hydrogen production by steam reforming of biomass, but this method has cumbersome process flow, complex equipment, and requires high temperature and high pressure;
This method is an effective method for inhibiting the formation of carbon monoxide in the process of photocatalytic reforming of biomass for hydrogen production, but this method is not effective for TiO 2 Intrinsic properties of photocatalysts did not improve

Method used

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  • TiO2 photocatalyst for photocatalytic reforming biomass hydrogen preparation and preparation and application
  • TiO2 photocatalyst for photocatalytic reforming biomass hydrogen preparation and preparation and application
  • TiO2 photocatalyst for photocatalytic reforming biomass hydrogen preparation and preparation and application

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Effect test

Embodiment 1

[0027] TiO 2 Preparation of photocatalyst

[0028] Due to the characteristics of anatase, some or all of it will be transformed into rutile when roasted at different temperatures, so this embodiment uses commercial TiO 2 (P25) Calcined in the range of 400-900°C for 0.5-72h, at each temperature-time to prepare a TiO 2 Photocatalyst, a total of 10 TiO 2 The photocatalysts are respectively numbered as Cat1-Cat10 for the convenience of the following description.

Embodiment 2

[0030] Commodity TiO 2 (P25) Hydrogen production activity and CO content in hydrogen (n CO / n H2 ) evaluation.

[0031] Add 0.5mL H to 200mL 20vol% aqueous methanol solution 2 PtCl 6 ·6H 2 O solution (0.37 mg / mL Pt content), add 0.2 g of commercial TiO under stirring 2 (P25), after the reaction system was evacuated, the reaction solution was irradiated (the light source was a 300W Xe lamp), and the gas composition and content were analyzed by online gas chromatography (reaction results are shown in Table 1).

Embodiment 3

[0033] TiO involved in the present invention 2 Hydrogen production activity and CO content in hydrogen (n CO / n H2 ) evaluation.

[0034] Method is the same as embodiment 2, just with commodity TiO in embodiment 2 2 (P25) replace the TiO involved in the present invention2 Photocatalyst Cat1-10 (reaction results are shown in Table 1).

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Abstract

The invention discloses a TiO2 photocatalyst for photocatalytic reforming biomass hydrogen preparation. A crystal phase composition of anatase and rutile phases can be regulated in a wide range and is obtained by calculating the strengths of a stronger anatase diffraction peak (101) and a stronger rutile diffraction peak (110) on XRD. The TiO2 photocatalyst applied in the photocatalytic reforming biomass hydrogen preparation reaction greatly improves the hydrogen generation activity and effectively inhibits the generation of carbon monoxide, wherein in photocatalytic reforming methanol reaction, the hydrogen generation activity of the TiO2 photocatalyst is about five times that of a TiO2 reference agent (P25), and the CO content of the hydrogen is at least reduced by two orders of magnitude, even below 5ppm.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production by utilizing solar energy, and in particular relates to a TiO2 for hydrogen production by photocatalytic reforming of biomass 2 catalyst of light. [0002] The present invention also relates to the aforementioned TiO 2 Preparation method of photocatalyst. [0003] The present invention also relates to the aforementioned TiO 2 Application of photocatalysts in reforming biomass for hydrogen production. Background technique [0004] The energy crisis and increasingly prominent environmental problems have promoted the exploration of clean and renewable energy. Hydrogen energy is one of the ideal clean energy sources, and it is also an important chemical raw material, which has attracted widespread attention from all over the world. At present, hydrogen production from non-renewable fossil resources is the main way. Therefore, the development of renewable energy hydrogen production te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J37/08B01J23/42B01J37/16C01B3/32
Inventor 李灿徐倩马艺张静王秀丽冯兆池
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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