Preparation method of hydrogen production composite catalyst
A composite catalyst and sodium hydroxide technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve problems such as poor bond breaking ability, high reaction temperature, and easy carbon deposition
Inactive Publication Date: 2014-12-17
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0003] Hydrogen production by steam reforming of bioethanol is one of the most important research topics of low-carbon energy. Catalysts are used in the hydrogen production process of steam reforming of ethanol; there are two types of catalysts, one is noble metal catalysts, such as Pt, Rh, Ru, Ir, etc. are catalysts with active components. These catalysts have high activity and high selectivity, but the reaction temperature is high and expensive, which is not conducive to large-scale industrial production; the other is a common metal catalyst, such as Cu , Co, Ni or their alloys are catalysts with active components. The common features of these catalysts are low cost, good low-temperature activity of Cu-based catalysts, but poor C-C bond breaking ability, and easy to generate by-products; Co-based catalysts have excellent options high activity, easy carbon deposition, and poor stability; Ni-based catalysts have high ethanol conversion and hydrogen yield, but poor selectivity; the above two types of catalysts have restricted the hydrogen production technology of biomass ethanol steam reforming development of
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Embodiment 1
[0075] The method of using the hydrogen production composite catalyst is as follows:
[0076] (1) Hydrogen production by steam reforming of ethanol is carried out in an atmospheric fixed-bed micro-reactor, and all parts of the atmospheric-pressure fixed-bed micro-reactor are in a quasi-working state;
[0077] (2) Put 3g of composite catalyst in a fixed-bed microreactor at normal pressure;
[0078] (3) Pass the mixed gas of hydrogen and nitrogen into the fixed bed micro-reactor at normal pressure, the volume ratio of hydrogen and nitrogen is 1:1, and perform reduction treatment on the composite catalyst, the reduction temperature is 550°C±5°C, and the reduction time is 2h ;
[0079] (4) After the reduction is completed, stop feeding the mixed gas of hydrogen and nitrogen, and then input nitrogen at a speed of 70cm 3 / min, control the reaction temperature at 500°C±5°C;
[0080] (5) Inject the mixture of ethanol and deionized water into the fixed-bed micro-reactor device at no...
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Abstract
The invention relates to a preparation method of a hydrogen production composite catalyst. The preparation method is developed for meeting a requirement of a hydrogen production technology by reforming ethanol and water vapor. The preparation method comprises the steps of taking imvite, nickel nitrate and aluminum nitrate as raw materials, taking deionized water as a solvent, taking sodium hydroxide as a pH (potential of hydrogen) value regulator, preparing a solution, mixing, conducting ion exchange, conducting hydrolytic polymerization in situ, crystallizing, washing, leaching, drying, grinding, roasting, and obtaining a composite catalyst product. The composite catalyst is a nano powder particle; the diameter of the particle is less than or equal to 100nm; and the purity of the product is good, and reaches 99.9%. The preparation method of the hydrogen production composite catalyst is advanced in technology, short in technological process, detailed and accurate in data, safe, stable, reliable and very ideal, and does not pollute an environment.
Description
Technical field [0001] The present invention involves a preparation method for a hydrogen -making composite catalyst, which is the technical field of preparation and application of hydrogen -making catalysts. Background technique [0002] As a new energy source, hydrogen has the advantages of rich sources, high burning thermal value, convenient use, and clean -free cleaning; there are many forms of hydrogen -making methods, such as: organic matter catalyzed reconstruction of hydrogen control, metal replacement hydrogen, solar light dissolving water dissolving water dissolving waterHydrogen -making, electrolytic hydrogen, hydrogen -making, hydrogen -making hydrogen -making, plasma arc -making hydrogen production; low -carbon alcohols such as methanol and ethanol, which has attracted the attention of researchers due to its high hydrogen content and cheap;However, methanol is highly toxic, and the cost of storage and transportation is high and abandoned; ethanol is a renewable resou...
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IPC IPC(8): B01J23/755C01B3/32
Inventor 谢鲜梅李婷婷殷雪梅周景龙
Owner TAIYUAN UNIV OF TECH