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Carbonyl nickel powder and carbonyl iron powder on palygorskite carrier and their preparing method

A technology of carbonyl nickel powder and carbonyl iron powder, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of uneven distribution of metals Uniformity, poor combination of carrier and metal particles, high price of oxide particles, etc.

Inactive Publication Date: 2006-11-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing nickel-based and iron-based catalysts generally use artificially synthesized oxides, such as Al 2 o 3 , SiO 2 and ZrO 2 As the carrier of nickel, they have defects such as poor combination of carrier and metal particles, uneven distribution of metal on the carrier, etc., and the oxide particles used as carriers are expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Ni(CO) 4 The steam is introduced into a closed cylindrical pyrolysis furnace with a temperature of 80°C. After preheating the separated, purified and spray-dried palygorskite powder to 180°C, it is sprayed into the pyrolysis furnace under the nitrogen carrier gas. Ni(CO) 4 Steam decomposes and precipitates on the surface of palygorskite to form nickel carbonyl powder and adheres to the surface of palygorskite. The resulting product is nickel carbonyl powder with palygorskite as the carrier.

Embodiment 2

[0026] Fe(CO) 5 The steam is introduced into a closed cylindrical pyrolysis furnace with a temperature of 150°C, and the separated, purified, and spray-dried palygorskite powder is preheated to 300°C, and then sprayed into the pyrolysis furnace under the nitrogen carrier gas. Fe(CO) 5 Steam decomposes and precipitates on the surface of palygorskite to form carbonyl iron powder and adheres to the surface of palygorskite. The resulting product is carbonyl iron powder with palygorskite as the carrier.

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PUM

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Abstract

The present invention discloses carbonyl nickel powder and carbonyl iron powder on palygorskite carrier. Palygorskite with intragranular tunnel pores can adsorb great amount of small molecular weight gas, such as H2, CO, CO2 and CH4, and is favorable to the synergistic effect of carbonyl nickel powder and carbonyl iron powder and can raise the catalytic efficiency. In addition, palygorskite is one kind of alkali mineral and can inhibit carbon accumulation during use to prolong the service life of the catalyst. The preparation process is one chemical evaporation and deposition process, and Ni(CO)4 or Fe(CO)5 vapor and palygorskite powder preheated to 180-300 deg.c are made to react inside a pyrolysis oven, so that the vapor is decomposed into fine Ni or Fe particles distributed homogeneously on the surface of palygorskite. The catalyst has high catalytic activity and long service life, and is used in petroleum hydrocracking and other hydrogenation reaction.

Description

technical field [0001] The invention relates to carbonyl nickel powder and carbonyl iron powder with palygorskite as a carrier and a preparation method thereof. Background technique [0002] Carbonyl nickel powder and carbonyl iron powder are made of Ni(CO) 4 , Fe(CO) 5 Metal particles formed by thermal decomposition of steam, which are catalysts for hydrocracking and hydrogenation reactions. Due to the shortage of light crude oil in the international market, the feed oil of my country's refineries has become significantly heavier in recent years. Hydrocracking reaction is the main means to improve the utilization rate of crude oil and the yield of high-quality fuel oil. In addition, fuels or chemical raw materials such as methane, methanol, and formaldehyde can be produced from carbon dioxide through hydrogenation reactions. 2 Environmental problems caused by emissions, and at the same time contribute to the rational development and utilization of CO 2 resource. Nickel...

Claims

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Application Information

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IPC IPC(8): B01J31/16B01J21/14B01J23/74
Inventor 叶瑛夏枚生张平萍邬黛黛陈雪刚王丽丹蒋淑华
Owner ZHEJIANG UNIV
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