Catalyst for steam reformation hydrogen production with by-product glycerol of biological diesel oil and preparation method thereof

Abstract

The invention discloses a catalyst for preparing hydrogen by reforming the by-product glycerine vapour of biological diesel oil and a preparation method thereof. The ingredients of the catalyst include 30-70 weight percent of bentonite, 5-20 weight percent of NiO and 5-15 weight percent of CuO. The catalyst prepared by such method has the advantages of that the reaction activity of preparation of hydrogen by glycerine vapour reforming is relatively high, the activity grows following the increase of temperature, the yield of hydrogen and carbon dioxide is increased and the quantity of carbon accumulation is lowered. The raw materials are mainly minerals and compounds which are cheap and abundant; the preparation process is simple, and the cost is low. In addition, the long-term storage or direct abandonment of the catalyst does not incur secondary pollution, therefore, the catalyst is environment-friendly.

Description

technical field [0001] The invention relates to a catalyst for hydrogen production by steam reforming of biodiesel by-product glycerin and a method for preparing the catalyst by using binary oxide and bentonite as raw materials. Background technique [0002] Using oil crops or waste cooking oil to carry out transesterification reaction with methanol (or ethanol) can produce fatty acid methyl ester (or ethyl ester) and glycerin and other products. After separating glycerin, biodiesel with the same quality as general diesel can be produced. With the increase of global biodiesel production, finding new utilization ways for the biodiesel by-product mono-glycerol has attracted widespread attention. Among them, hydrogen production by steam reforming of glycerol is one of the more promising technical approaches to utilize by-product glycerol for energy conversion, and the key to this technology is to obtain high-performance catalysts. At present, most of the catalysts selected by ...

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Problems solved by technology

At present, the catalysts selected by the research institute of hydrogen production by steam reforming of glycerol are mostly concentrated on catalysts for hydrogen production by steam reforming of methane and methanol, and these catalysts are relatively expensive

Moreover, since the by-product glycerol of biodiesel contains a lot of impurities, the oxygen content in glycerol molecules is high, and the chemical process of glycerol steam reforming is extremely complicated, therefore, it is necessary to develop a cheap catalyst specially used for glycerol steam reforming to produce hydrogen. Urgent problems to be solved in current biodiesel by-product glycerol utilization technology

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