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Light-hydrocarbon isomerization catalyst and method for preparing same

A technology for isomerization and catalyst, applied in the field of light hydrocarbon isomerization catalyst and its preparation, can solve the problems of short service life, long process flow, short service life of catalyst, etc., and achieve improved isomerization performance and high isomerization activity , the effect of improving stability

Inactive Publication Date: 2013-12-25
KAIRUI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has excellent selectivity to double-branched and multi-branched isomers while maintaining a high conversion rate of normal hydrocarbon hydroisomerization, but the catalyst still has long process flow and short service life. The problem
[0005] Catalysts in the prior art generally have the disadvantages of low stability of carrier-loaded metals, short service life of catalysts, low conversion rate, etc., and more in-depth research and improvement are needed

Method used

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  • Light-hydrocarbon isomerization catalyst and method for preparing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Resin-based spherical activated carbon, produced by Shanxi Cuihong Technology Co., Ltd.

[0023] Ball diameter is 0.3-1.2mm, specific surface area (BET) 950-1200(m 2 / g), the pore volume is 0.6-0.75ml / g.

[0024] 1). Preparation of carrier:

[0025] Move the resin-based spherical activated carbon into a tubular electric furnace with a nitrogen flow for pyrolysis, slowly raise the temperature from room temperature to 800°C, switch nitrogen to hydrogen fluoride at a flow rate of 5L / hour after reaching the temperature, and activate it for 5 hours, and cool the product to room temperature. A catalyst carrier is obtained. In the catalyst carrier, mesopores accounted for 82% and micropores accounted for 18%.

[0026] 2). Load operation

[0027] Soak the catalyst carrier in ethanol solvent for 4 hours, the mass ratio of catalyst carrier to ethanol solvent is 1:3, add palladium nitrate accounting for 3% of the mass percentage of the catalyst carrier, and the loading time is...

Embodiment 2

[0029] Adding in step 2 accounts for the palladium nitrate of 1% by mass percentage of the catalyst carrier, and the others are the same as in Example 1. The resulting product number is KRB-2. In the catalyst carrier, mesopores account for 85% and micropores account for 15%.

Embodiment 3

[0031] Adding in step 2 and accounting for catalyst carrier mass percent is 5% palladium nitrate, other is the same as embodiment 1. The resulting product number was KRB-3. In the catalyst carrier, mesopores accounted for 81%, and micropores accounted for 19%.

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Abstract

The invention discloses light-hydrocarbon isomerization catalyst and a method for preparing the light-hydrocarbon isomerization catalyst. Resin ribbon ball-shaped active carbon having high specific surface area and a micro-hole structure serves as the carrier, is roasted under high temperature and is activated through hydrogen fluoride to obtain a carrier with high specific surface area and a mesoporous structure, palladium loading is then carried out according to a liquid phase deposition method, and modifying is carried out through fluorine-containing chlorides at the same time to obtain the light-hydrocarbon isomerization catalyst. The light-hydrocarbon isomerization catalyst has extremely large specific surface area and a proper hole structure, and has good isomerization performance after modifying is carried out through the fluorine-containing chlorides. High activity of the light-hydrocarbon isomerization catalyst can still be kept after long-period operation and the light-hydrocarbon isomerization catalyst is long in service life.

Description

technical field [0001] The invention relates to a catalyst preparation method, in particular to a light hydrocarbon isomerization catalyst and a preparation method thereof. technical background [0002] The C5 and C6 alkane isomerization process is to convert the n-alkanes in the raw material into the corresponding isomeric hydrocarbons, increase the octane number of the light part of gasoline, that is, the "front end", and make the distillation range and octane number of gasoline have a reasonable balance. distributed. Since isomerized oil is an environmentally friendly product with low sulfur, no aromatics and olefins, which can meet new environmental protection requirements, the isomerization process of C5 and C6 alkane plays an important role in the production of clean fuels. [0003] CN1270990A provides a light hydrocarbon isomerization catalyst, which is composed of 0.01-2.0% by weight of group VIII metals and a composite zeolite carrier, and the composite zeolite car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28B01J32/00B01J35/10C07C5/27C07C9/16
Inventor 张勇王金明
Owner KAIRUI ENVIRONMENTAL PROTECTION TECH
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