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Isobutane dehydrogenation catalyst and preparation method thereof, and method for producing isobutene from isobutane dehydrogenation

A technology of dehydrogenation catalyst and isobutane, which is applied in the direction of catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of uneven dispersion of noble metal active components, poor catalytic activity and stability, etc. The effect of carbon risk, good stability and good catalytic performance

Active Publication Date: 2022-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of method for preparing isobutane dehydrogenation catalyst and by the method The prepared isobutane dehydrogenation catalyst and the method for preparing isobutene from isobutane dehydrogenation, the method provided by the invention is easy to operate, environmentally friendly and low in cost, and the isobutane dehydrogenation catalyst prepared by the method is supported on precious metals When the amount is very low, it can achieve better dehydrogenation activity, selectivity, stability and carbon deposition resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This example is used to illustrate the isobutane dehydrogenation catalyst and its preparation method.

[0064] The artificial zeolite A1 was calcined at 400° C. for 10 hours under the protection of nitrogen to perform heat activation treatment to remove the hydroxyl group and residual moisture of the artificial zeolite A1 to obtain the heat-activated zeolite carrier B1.

[0065] 0.080g H 2 PtCl 6 ·6H 2 O and 0.457g Zn(NO 3 ) 2 ·6H 2 O was dissolved in 100ml of deionized water to obtain a mixture solution, and 10 g of the thermally activated zeolite carrier B1 obtained after the aforementioned heat activation treatment was immersed in the mixture solution, and after immersion at 25°C for 5 hours, evaporated with a rotary evaporator The solvent water in the system was used to obtain a solid product, which was placed in a drying oven at a temperature of 120° C. and dried for 3 hours. Then in the muffle furnace, the temperature is 600 ℃ roasting 6h to obtain the isobu...

Embodiment 2

[0078] This example is used to illustrate the isobutane dehydrogenation catalyst and its preparation method.

[0079] The artificial zeolite A2 was calcined at 400° C. for 10 hours under the protection of nitrogen to carry out thermal activation treatment to remove the hydroxyl group and residual moisture of the artificial zeolite A2 to obtain the thermally activated zeolite carrier B2.

[0080] 0.080g H 2 PtCl 6 ·6H 2 O and 0.457g Zn(NO 3 ) 2 ·6H 2 O was dissolved in 100ml of deionized water to obtain a mixture solution, and 10 g of the heat-activated zeolite carrier B2 obtained after the aforementioned heat-activation treatment was immersed in the mixture solution, and after soaking at 25°C for 5 hours, evaporated with a rotary evaporator The solvent water in the system was used to obtain a solid product, which was placed in a drying oven at a temperature of 120° C. and dried for 3 hours. Then in the muffle furnace, the temperature is 600 ℃ roasting 6h to obtain the is...

Embodiment 3

[0086] The artificial zeolite A3 was calcined at 400° C. for 10 hours under the protection of nitrogen to perform thermal activation treatment to remove the hydroxyl group and residual moisture of the artificial zeolite A3 to obtain the thermally activated zeolite carrier B3.

[0087] 0.080g H 2 PtCl 6 ·6H 2 O and 0.457g Zn(NO 3 ) 2 ·6H 2 O was dissolved in 100ml of deionized water to obtain a mixture solution, and 10 g of the thermally activated zeolite carrier B3 obtained after the aforementioned heat activation treatment was immersed in the mixture solution, and after immersion at 25°C for 5 hours, evaporated with a rotary evaporator The solvent water in the system was used to obtain a solid product, which was placed in a drying oven at a temperature of 120° C. and dried for 3 hours. Then in the muffle furnace, the temperature is 600 ℃ roasting 6h to obtain the isobutane dehydrogenation catalyst Cat-3 (based on the total weight of the isobutane dehydrogenation catalyst...

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Abstract

The invention relates to the field of catalysts, and discloses an isobutane dehydrogenation catalyst, a preparation method thereof and a method for preparing isobutene from isobutane dehydrogenation. The method for preparing the isobutane dehydrogenation catalyst comprises: (a) carrying out thermal activation treatment on the zeolite to obtain a thermally activated zeolite carrier; (b) applying the thermally activated zeolite carrier obtained in step (a) to the The precursor and the Zn component precursor solution are impregnated, followed by solvent removal, drying and roasting. The method is simple to operate, and the raw materials are readily available, and the obtained isobutane dehydrogenation catalyst can achieve better dehydrogenation activity, selectivity, stability and carbon deposition resistance under the condition that the loaded amount of noble metal is very low.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a method for preparing an isobutane dehydrogenation catalyst, an isobutane dehydrogenation catalyst prepared by the method and a method for preparing isobutene from isobutane dehydrogenation. Background technique [0002] Isobutylene is a very important organic chemical raw material, mainly used in the preparation of methyl tert-butyl ether, butyl rubber, methyl ethyl ketone, polyisobutylene, methyl methacrylate, isoprene, tert-butylphenol, tert-butylamine, 1, Various organic raw materials and fine chemicals such as 4-butanediol and ABS resin. The main source of isobutene is the by-product C4 fraction of naphtha steam cracking ethylene unit, the by-product C4 fraction of refinery fluid catalytic cracking (FCC) unit and the by-product tert-butanol (TAB ). [0003] In recent years, with the development and utilization of isobutene downstream products, the demand for isobutene has been in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/00B01J35/02B01J35/10B01J37/02B01J37/08C07C5/333C07C11/09
CPCB01J29/00B01J37/0207B01J37/0205B01J37/0236B01J37/08B01J35/1019B01J35/023B01J35/1033C07C5/3337C07C11/09
Inventor 刘红梅亢宇刘东兵
Owner CHINA PETROLEUM & CHEM CORP
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