Metal base monolithic catalyst for preparing low carbon hydrocarbons by using methane through oxidative coupling and preparation method thereof

A monolithic catalyst and oxidative coupling technology, applied in the field of catalysis, to achieve the effects of good thermal conductivity, low thermal resistance, and reduced bed lamination

Inactive Publication Date: 2009-09-09
BEIJING UNIV OF CHEM TECH
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  • Application Information

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Problems solved by technology

However, the existing published technology is difficult to directly load the active components of the catalyst for oxidative coupling of methane to ethylene on the alloy sheet to obtain a monolithic catalyst for oxidative coupling of methane to ethylene suitable for strong heat transfer reaction and large space velocity

Method used

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  • Metal base monolithic catalyst for preparing low carbon hydrocarbons by using methane through oxidative coupling and preparation method thereof
  • Metal base monolithic catalyst for preparing low carbon hydrocarbons by using methane through oxidative coupling and preparation method thereof
  • Metal base monolithic catalyst for preparing low carbon hydrocarbons by using methane through oxidative coupling and preparation method thereof

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Embodiment Construction

[0024] The catalyst of the present invention is used for the reaction of oxidative coupling of methane to produce ethylene, which is carried out on a micro-fixed-bed reaction device at normal pressure, and the catalyst bed is composed of {catalytically active components} / Al with a height of 10-15 cm 2 o 3 / FeCrAl metal-based monolithic catalyst composition. The volume ratio of methane and oxygen in the reaction raw material gas is 3: 1, and the gas space velocity (that is, every gram of catalyst (Al except FeCrAl alloy carrier) 2 o 3 The sum of the mass of dry sol and {catalytic active component})) is 42000h -1 , the reaction temperature is 700-850°C, and after 30 minutes of stability at the reaction temperature, the reactants and products are analyzed online with a gas chromatograph, so as to obtain the conversion rate of methane and the ratio of ethylene, ethane, CO and H 2 selectivity.

[0025] The structure of the catalyst of the present invention when used is a roll s...

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Abstract

The invention relates to a metal base monolithic catalyst for preparing low carbon hydrocarbons by using methane through oxidative coupling and a preparation method thereof, which belongs to the technical field of catalysis. The metal base monolithic catalyst comprises a metal base composite carrier formed by compounding an FeCrAl alloy thin sheet and an Al2O3 layer and a catalyst active component covered on the Al2O3 layer; the Al2O3 in the metal base composite carrier accounts for 8 to 10 percent of the mass of the metal base composite carrier; and the catalyst active component is Li/MgO catalyst active component, wherein the mass of the Li accounts for 1 to 5 percent of the mass of the MgO. The invention enables the active component of the ethylene catalyst prepared by methane through oxidative coupling to be loaded to the alloy thin sheet so as to achieve the good catalyzing effect.

Description

[0001] This application is a divisional application of the patent application with the application number "2007101760948", an application of the original application The date is October 16, 2007 and the name is " Metal-based monolithic catalyst for direct catalytic conversion of methane and preparation method thereof ”。 technical field [0002] The invention relates to a metal-based integral catalyst for direct catalytic conversion of methane to produce low-carbon hydrocarbons and a preparation method thereof, belonging to the technical field of catalysis. Background technique [0003] Low-carbon hydrocarbons, especially ethylene, are one of the important basic chemical raw materials, and the industrial demand is very large. Since the ethylene produced by petroleum steam cracking and catalytic cracking is far from meeting the market demand, the process of producing ethylene from natural gas (mainly composed of methane) has attracted more and more attention from the indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/86B01J23/04B01J37/025B01J35/04C07C2/84C07C11/04C07C11/02
CPCY02P20/52
Inventor 季生福王开李成岳孙思丁大为
Owner BEIJING UNIV OF CHEM TECH
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