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Hydrogen production catalyst

A catalyst and reforming hydrogen production technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrogen, etc., can solve low ethanol conversion rate, poor stability, low hydrogen selectivity, etc. question

Inactive Publication Date: 2012-06-27
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In view of the deficiencies in the prior art, in order to solve the shortcomings of the existing hydrogen production catalysts such as low ethanol conversion rate, low hydrogen selectivity, and poor stability, the present invention provides for the first time a novel catalyst and Its preparation method can be used for the hydrogen production of lower alcohols represented by ethanol, the hydrogen production of long-chain alkanes represented by dodecane, and the hydrogen production reaction of CO steam reforming

Method used

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  • Hydrogen production catalyst

Examples

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Effect test

Embodiment 1

[0087] Make a solution of cerium nitrate and lanthanum nitrate at a ratio of 9:1, add excess urea to the solution, and stir continuously at 90°C for 12 hours, then suction filter and wash, put the filter cake in an oven and dry at 110°C Dry overnight, and finally calcine in air at 500°C for 5 hours in a muffle furnace to obtain a powder. An appropriate amount of rhodium chloride solution is added, and an impregnation method is used to prepare a supported rhodium catalyst with a loading capacity of 1%. The loaded product was dried in an oven at 110°C overnight, and finally calcined in air at 500°C for 3 hours in a muffle furnace to obtain a powdered catalyst.

[0088] The prepared catalyst was pressed into tablets, crushed, sieved, and 40-60 meshes were taken for later use, which was called catalyst A.

Embodiment 2

[0090] Other conditions were the same as in Example 1, but the Ce / La molar ratio was changed to 8:2 to prepare catalyst B.

Embodiment 3

[0092] Catalyst C was prepared by changing the Ce / La molar ratio to 7:3 with other conditions unchanged as in Example 1.

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Abstract

The invention provides a cerium-based composite oxide loaded noble metal catalyst for catalyzing alcohols and hydrocarbons to carry out hydrogen production by reforming, comprising two parts including noble metal and a carrier. The noble metal is one or combination of more than two of rhodium, platinum, palladium, iridium, ruthenium and gold; and the carrier is a cerium-based composite oxide carrier which takes a cerium-lanthanum solid solution as a representative. The catalyst can be applied in the form of a grain state or a powder state and also can be coated on a porous integral ceramic to be used as a monolithic catalyst. The invention further provides a manufacturing method of the catalyst, which comprises the following steps of preparing a cerium-based composite oxide and loading the noble metal. Some preferable implementation schemes of the catalyst utilize biological ethanol as a raw material and the prepared hydrogen can be considered to a renewable energy source; and the catalyst can be applied to the condition of a high space velocity.

Description

technical field [0001] The present invention relates to a catalyst, in particular to a catalyst in which precious metals are supported on cerium-based composite oxides for catalyzing low-temperature reforming to produce hydrogen, and in particular to a catalyst for producing hydrogen from lower alcohols represented by ethanol and decathene Hydrogen production from lower hydrocarbons represented by dioxane. Background technique [0002] Energy and environmental issues are the two major problems facing mankind at present, mainly because most of the energy that people rely on now is fossil energy, and fossil fuels are not only non-renewable, but also have less and less reserves, and they are still used in the process of use. emit large amounts of pollutants. Therefore, it is imminent to find a renewable and clean alternative energy source. [0003] Hydrogen is an ideal energy carrier, because when hydrogen reacts with oxygen to release energy, the only product is water, which...

Claims

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Application Information

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IPC IPC(8): B01J23/63C01B3/16C01B3/32C01B3/38
CPCY02P20/133Y02P20/52Y02P20/584
Inventor 贺泓韩雪余运波张长斌王少莘
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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