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Catalyst for preparing propylene through selective hydrogenation of propyne as well as preparation method and application of catalyst

A catalyst and selectivity technology, applied in the direction of catalysts, metal/metal oxide/metal hydroxide catalysts, carbon compound catalysts, etc., can solve the problems of poor catalyst selectivity, narrow reaction range, and easy carbon deposition of catalysts, etc., to promote Propylene desorption, good stability and high industrial application value

Pending Publication Date: 2021-03-09
ZHEJIANG SATELLITE ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a catalyst for the selective hydrogenation of propyne to prepare propylene, so as to solve the problems in the prior art that the reaction range is narrow, the catalyst is easy to deposit carbon, and the catalyst selectivity is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation method of the catalyst that is used for the selective hydrogenation of propyne to prepare propylene, concrete steps are:

[0038] 1. Accurately weigh 5g of dried γ-Al 2 o 3 (The particles are about 30 mesh), placed in a 250mL beaker, calculated according to the MgO load of 10wt%, weighed a quantitative 30wt% magnesium nitrate solution and slowly added it to the carrier beaker while stirring, impregnated and aged for 24h, and then Place the beaker in an oven at a constant temperature of 120°C for 12 hours, and finally transfer the carrier precursor to a crucible, place it in a muffle furnace for roasting, raise the temperature from room temperature to 650°C at a rate of 5°C / min, keep the temperature constant for 4 hours, and then drop to room temperature , to obtain a composite catalyst carrier, which is placed in a closed desiccator for subsequent use.

[0039] 2. Accurately weigh 3g of the composite catalyst carrier and place it in a 100mL beake...

Embodiment 2

[0042] With metal ruthenium (RuCl 3 ) to replace metal palladium in embodiment 1, and other steps are the same as embodiment 1.

Embodiment 3

[0044] Platinum metal (K 2 PtCl 6 ) to replace metal palladium in embodiment 1, and other steps are the same as embodiment 1.

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PUM

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Abstract

The invention relates to a preparation method of a catalyst, in particular to a catalyst for preparing propylene through selective hydrogenation of propyne as well as a preparation method and application of the catalyst, and belongs to the technical field of organic chemistry. The catalyst for preparing propylene through selective hydrogenation of propyne is a supported noble metal catalyst, gamma-Al2O3 is used as a main component of a catalyst carrier of the catalyst, and MgO is attached to the surface of the carrier to form a composite metal oxide carrier; one or more of noble metals Ru, Pdand Pt are used as main active components, and the content of the noble metals is 0.1-3.0 wt% based on the weight content of the final catalyst; and one or more of non-noble metals Cu, Zn and Co are used as auxiliary metals to modify the noble metals, and the molar ratio of the noble metals to the non-noble metals is 1: 1-10.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a catalyst used for the selective hydrogenation of propyne to prepare propylene, its preparation method and application, and belongs to the technical field of organic chemistry. Background technique [0002] Propylene is the second largest basic chemical raw material in the petrochemical industry after ethylene. The largest consumption of propylene is in the production of polypropylene. In addition, propylene can be used to produce acrylonitrile, isopropanol, phenol, acetone, butanol, octanol, acrylic acid and other Lipids and the preparation of propylene oxide, propylene glycol, epichlorohydrin and synthetic glycerol, etc. The current main process routes for producing propylene are: steam cracking process, catalytic cracking process, coal-to-olefins process, olefins disproportionation process and propane dehydrogenation process. With the maturity of propane dehydrogenation ...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J23/60C07C5/09C07C11/06
CPCB01J23/8946B01J23/60C07C5/09C07C2523/89C07C2523/78C07C2523/60C07C11/06Y02P20/52
Inventor 罗军杨卫东高军田俊凯范昌海陆朝阳亓虎李亚萍周轶
Owner ZHEJIANG SATELLITE ENERGY CO LTD
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