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Composite metal oxide, raw material composition and preparation method and application thereof

A raw material composition and composite metal technology, applied in the preparation of organic compounds, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve separation difficulties, and copper-based catalysts are easy to agglomerate and deactivate Wait for the question

Active Publication Date: 2021-01-12
SHAANXI YANCHANG PETROLEUM GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the disadvantages of copper-based catalysts in the prior art, such as easy agglomeration, rapid deactivation, difficult separation and low catalytic efficiency, to provide a composite metal oxide, raw material composition and its preparation method and application

Method used

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  • Composite metal oxide, raw material composition and preparation method and application thereof
  • Composite metal oxide, raw material composition and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1～12 and comparative example 1～6

[0072] The raw material compositions of composite metal oxides in the examples and comparative examples are shown in Table 1, and the preparation method specifically includes the following steps:

[0073] (1) Mix cuprous oxide, zinc oxide, gallium oxide, basic amino acid and water, adjust the pH of the system to 10 with hydrochloric acid with a concentration of 0.1mol / L, that is, adjust to the isoelectric point of the basic amino acid, and obtain Amino acid trimetal complexes;

[0074] (2) Grinding the carrier, the mesh of which is 80 mesh, is ready for use; add the ground carrier to the amino acid trimetallic complex prepared in step (1), immerse at room temperature for 24 hours, and heat to 50° C. , and then carry out crystallization, the crystallization time is 24h, filter and collect the filter residue, wash the filter residue 3 to 5 times with distilled water, dry at 110°C for 6h, and finally calcinate at 520°C for 4h to obtain a composite metal oxide.

[0075] In the fo...

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Abstract

The invention discloses a composite metal oxide, a raw material composition and a preparation method and application thereof. The raw material composition of the composite metal oxide comprises the following components in parts by weight: 1-5 parts of a copper-containing compound, 1-10 parts of a zinc-containing compound, 1-10 parts of a gallium-containing compound, 80-97 parts of a carrier, 2.4-37.5 parts of alkaline amino acid and a solvent. Copper oxide, zinc oxide and gallium oxide in the prepared composite metal oxide form an alloy type dispersion phenomenon, atom-level confinement and dispersion are achieved, and agglomeration and inactivation of copper are effectively prevented; when the raw material composition is applied to catalytic dehydrogenation and ammoniation reactions, thecatalytic efficiency is high, the raw material conversion rate is high, byproducts are few, the service life can reach 1000 hours or longer, and the service life of the catalyst is greatly prolonged.

Description

technical field [0001] The invention relates to a composite metal oxide, a raw material composition, a preparation method and application thereof. Background technique [0002] Nitrile is an important fine chemical intermediate product and chemical solvent, and its use is relatively extensive. The preparation technology of nitrile has become a research hotspot at present. [0003] At present, the methods for industrially synthesizing nitrile include the reaction of acid and ammonia, the reaction of propane and ammonia, the reaction of primary alcohol and ammonia, and the by-product acetonitrile in the process of producing acrylonitrile. Wherein, the method for preparing nitrile by reaction of acid and ammonia or reaction of propane and ammonia has defects such as low nitrile product selectivity, relatively harsh reaction conditions, and high cost; The output of nitrile is limited, and the output of acetonitrile cannot meet the demand for a long time. The method of producin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J29/46B01J37/02B01J37/08C07C253/00C07C255/03
CPCB01J23/72B01J23/002B01J29/46B01J37/0203B01J37/086C07C253/00B01J2523/00B01J2229/186B01J2229/40B01J2523/17B01J2523/27B01J2523/31B01J2523/32B01J2523/41C07C255/03Y02P20/52
Inventor 杨东元扈广法孙育滨
Owner SHAANXI YANCHANG PETROLEUM GRP
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