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Catalyst used for directly synthesis ethylene with carbon monoxide and hydrogen and its technology

A catalyst and ethylene technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., can solve problems such as high energy consumption, complex processes, and complex reaction products

Inactive Publication Date: 2007-10-24
TIANJIN XINGXIN CATALYTIC REACTION TECH RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the industrial technology of naphtha sand furnace cracking to produce ethylene is widely used at home and abroad. The reaction is completed at a high temperature of 600-800°C, and the energy consumption is high. The reaction products are complex, and the ethylene selectivity is about 30%, which needs to be separated by cryogenics. , the process is quite complicated

Method used

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  • Catalyst used for directly synthesis ethylene with carbon monoxide and hydrogen and its technology

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Embodiment 1

[0014] Embodiment 1, the preparation of Ni-Cu / MgSiO catalyst and its catalytic reaction process

[0015] A certain amount of activation treatment (φ1nm, average pore diameter 10nm, specific surface area 240m 2 / g) Industrial carrier SiO 2 , impregnated into SiO with 2 Carrier pore volume equivalent, Mg 2+ The concentration corresponds to MgCl with a surface Mg / Si atomic ratio of 1:6 2 Aqueous solution, after surface reaction, soaking in ammonia water, filtering and washing, drying and calcination, Mg 2+ A surface composite oxide MgSiO carrier with a semi-monolayer distribution; a certain amount of MgSiO surface composite oxide carrier prepared according to the above process, impregnated into the pore volume equivalent, Ni 2+ and Cu 2+ The concentration of the mixed nitrate aqueous solution with the atomic ratio of Ni / Cu 2:1 and the atomic ratio of Mg / Ni-Cu 4:1 was dried, calcined, and reduced to obtain φ1.2nm Ni-Cu particles uniformly distributed on the surface of MgSiO. ...

Embodiment 2

[0017] Embodiment 2, the preparation of Ni-Cu / TiSiO catalyst and its catalytic reaction process

[0018] A certain amount of activation treatment (φ1nm, average pore diameter 10nm, specific surface area 240m 2 / g) Industrial carrier SiO 2 , impregnated into SiO with 2 The carrier pore volume is equivalent, Ti 4+ Titanium isopropoxide chloride-acetone solution whose concentration conforms to the surface Ti / Si atomic ratio of 1:6, after surface reaction, soaking in ammonia water, filtering and washing, drying and calcination, Ti 4+ A surface composite oxide TiSiO carrier with a semi-monolayer distribution; a certain amount of TiSiO surface composite oxide carrier prepared according to the above process, impregnated into the TiSiO surface composite oxide carrier equivalent to its pore volume, Ni 2+ and Cu 2+ The concentration of Ni / Cu atomic ratio 2: 1 and Ti / Ni-Cu atomic ratio 4: 1 mixed nitrate aqueous solution, through drying, calcination, reduction process to prepare φ1.2...

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Abstract

The invention relates to fine chemistry, particularly ethylation catalyst. With CO and H2 synthesized into ethylation catalyst, it features in the composite oxides MgSiO or TiSiO, the carrier metal being Ni-Cu alloy, forming into Ni-Cu / MgSiO, or Ni-Cu / TiSiO as direct alloy ethylation catalyst for CO and H2. It provides two practical industrial solid accelerant. It can realize direct synthesis of CO and H2, producing 99% ethane product.

Description

technical field [0001] The invention belongs to the field of fine chemical industry; especially the field of ethylene catalyst and its technology. Background technique [0002] Ethylene is the basic raw material for the production of many organic chemical products. At present, the industrial method of producing ethylene at home and abroad is mainly the pyrolysis method of naphtha. In view of the conversion from carbon-containing or hydrocarbon substances (coal, natural gas, organic waste, etc.) 2 ) and the production of many organic chemicals from ethylene are mature industrial technologies, realizing CO and H 2 The new process of direct ethylene production provides a new channel for rational utilization of carbon resources and development of ethylene chemical industry. while realizing CO and H 2 The key technology for the direct synthesis of ethylene is a practical industrial solid catalyst and its catalytic reaction process. At present, the industrial technology of na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/72C07C1/06C07C11/04
CPCY02P20/52
Inventor 钟顺和
Owner TIANJIN XINGXIN CATALYTIC REACTION TECH RES & DEV
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