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Catalyst containing MCM-22 molecular sieve and application of catalyst in preparing liquid fuel from synthesis gas through one-step method

A liquid fuel and catalyst technology, applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of low selectivity of target products, achieve high selectivity, promote activation conversion, and improve conversion rate. Effect

Active Publication Date: 2021-06-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The hydrocarbon products of the whole reaction have a wide distribution of carbon atoms, and the selectivity of the target product is low, such as the selectivity of gasoline is lower than 50%.

Method used

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  • Catalyst containing MCM-22 molecular sieve and application of catalyst in preparing liquid fuel from synthesis gas through one-step method
  • Catalyst containing MCM-22 molecular sieve and application of catalyst in preparing liquid fuel from synthesis gas through one-step method
  • Catalyst containing MCM-22 molecular sieve and application of catalyst in preparing liquid fuel from synthesis gas through one-step method

Examples

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preparation example Construction

[0033] 1. Preparation of Catalyst Component I

[0034] (1) Synthesis of ZnO materials with high specific surface area by precipitation method:

[0035] (1) Weigh 3 parts, 0.446g (1.5mmol) Zn(NO 3 ) 2 ·6H 2 O in 3 containers, then weigh 0.300g (7.5mmol), 0.480g (12mmol), 0.720g (18mmol) NaOH and add them to the above 3 containers in turn, then add 30ml of deionized water to each of the 3 containers In the container, stir at 70°C for more than 0.5h to make the solution evenly mixed, and cool naturally to room temperature. The reaction solution was centrifuged to collect the precipitate after centrifugation, and washed twice with deionized water to obtain the ZnO metal oxide precursor;

[0036] (2) Roasting: After the above-mentioned obtained product is dried in the air, it is calcined in the atmosphere to obtain a ZnO material with a high specific surface area. The atmosphere is inert gas, reducing gas or oxidizing gas; the inert gas is N 2 One or more of , He and Ar; the ...

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Abstract

The invention provides a catalyst containing an MCM-22 molecular sieve and a method for directly converting synthesis gas to prepare liquid fuel, synthesis gas is used as a reaction raw material, a conversion reaction is carried out on a fixed bed or a moving bed, the catalyst is a composite catalyst, and a component I and a component II are compounded together in a mechanical mixing mode, the active component of the component I is a metal oxide, and the component II is an MCM-22 molecular sieve; and the weight ratio of the activecomponent in the component I to the active component in the component II is 0.1-20 times. The reaction process has very high product yield and selectivity, the selectivity of liquid fuel consisting of C5-C11 can reach 50-80%, the selectivity of aromatic hydrocarbon in C5-C11 is lower than 40%, the selectivity of byproduct methane is lower than 8%, and the method has a very good application prospect.

Description

technical field [0001] The invention belongs to the preparation of liquid fuel by synthesis gas, and in particular relates to a method for preparing liquid fuel with low aromatic content by direct conversion of synthesis gas and an MCM-22 molecular sieve-based catalyst. Background technique [0002] With the development of the economy and the improvement of living standards, the demand for liquid fuels and chemicals has also increased sharply year by year. Gasoline is currently produced mainly by catalytic reforming of heavy naphtha. With the increasing consumption of global oil resources, especially for my country, which is short of oil resources, more than 60% of oil consumption depends on imports every year. It is necessary to seek an alternative process route and develop and utilize non-oil-based materials such as coal and biomass. The method of preparing liquid fuel from carbon resources has important social and strategic significance. [0003] my country is rich in co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/70B01J29/74B01J29/76B01J29/78C10G2/00
CPCB01J29/7676B01J29/7876B01J29/7476B01J29/7088B01J29/7038C10G2/334C10G2400/02Y02P30/20Y02P20/52
Inventor 焦峰封景耀潘秀莲包信和
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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