Preparation method of metal catalyst with high selectivity and high dispersion

A metal catalyst, high selectivity technology, applied in catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as waste water generation, unfriendly environment, environmental impact, etc.

Inactive Publication Date: 2014-07-23
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

However, in the process of preparing nano-metal catalysts by co-precipitation method and homogeneous deposition method, due to the widespread use of cheaper metal nitrate precursors, a large amount of nitrate-containing wastewater is produced, which has a great impact on the environment. , the environment is not friendly

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  • Preparation method of metal catalyst with high selectivity and high dispersion
  • Preparation method of metal catalyst with high selectivity and high dispersion

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the embodiments shown in the accompanying drawings.

[0017] The size of gasoline anti-knock ability is related to chemical composition. Aromatics have the best shock resistance (that is, the least knocking), followed by naphthenes and branched isoparaffins, followed by olefins, and normal (linear) alkanes in alkanes have the lowest shock resistance. However, aromatic hydrocarbons in gasoline components can easily produce carcinogens due to incomplete oxidative combustion, causing pollution to the environment. Therefore, the target Fischer-Tropsch synthesis products are mainly naphthenes and branched isoparaffins.

[0018] 1. Preparation of base metal catalysts: use different base metal (such as Cu, Ag, Au, Ni, Co, Fe) precursors (nitrate or acetate and other salts containing the above metal elements) and organic acids containing carboxyl groups (such as formic acid , acetic acid, pro...

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Abstract

The invention discloses a preparation method of a metal catalyst with high selectivity and high dispersion, and relates to a preparation method of a metal catalyst. The method can be used for preparing a series of nanoscale, reduction-free and high-dispersion metal catalysts, and adopts base metal including Cu, Ag, Au, Ni, Fe and Co, and noble metal including Pt, Pd, Rh, Ru and Ir, the prepared Ru / H-beta molecular sieve based catalyst has good fischer-tropsch reactivity, meanwhile, the reactivity of a C5-C11 liquid state product (comprising main ingredient of a gasoline blending agent) is 70% of that of a full product, and the ratio of isoparaffin to n-alkanes in the product is as high as 5 to 1. The dispersing degree of noble metal Ru in the prepared Ru / H-beta molecular sieve based catalyst is 40%, the particle size of metal Ru is 1-2 nanometers, the catalyst is not subjected to extra reduction treatment, and the reduction degree of metal Ru in the prepared Ru / H-beta molecular sieve based catalyst is higher than 90%.

Description

technical field [0001] The invention relates to a method for preparing a metal catalyst, in particular to a method for preparing a highly selective and highly dispersed metal catalyst. Background technique [0002] Gasoline, the appearance is a transparent liquid, the main components are C4 ~ C12 aliphatic hydrocarbons and cyclic hydrocarbons. my country's gasoline standards allow a small amount of aromatic hydrocarbons. Gasoline is mainly used in internal combustion engines and automobile engines. As an important index to measure the quality of gasoline, there are gasoline anti-knock and gasoline compression ratio. The antiknock of gasoline is directly represented by the octane number of gasoline. At the same time, gasoline with a high octane number can be applied to a carburetor gasoline engine with a high compression ratio, which can significantly increase the power of the engine, reduce fuel consumption, and improve thermal efficiency. The octane number of gasoline i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/00B01J29/74C10G2/00
Inventor 石磊王玉鑫谭猗生
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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