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Process for preparing dehydrogenation catalysts for linear light hydrocarbons using stable active metal complexes

一种脱氢催化剂、复合物的技术，应用在金属/金属氧化物/金属氢氧化物催化剂、碳化合物催化剂、有机化合物/氢化物/配位配合物催化剂等方向，能够解决缩短催化剂寿命、不利吸附等问题，达到抑制剥离、改进选择性、经济优异的效果

Active Publication Date: 2021-07-13
HEESUNG CATALYSTS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, reactants or products may stay in the catalyst for a long time, unfavorably causing side reactions such as adsorption of products within the catalyst, additional reactions of products, isomerization and coke formation, and shortening of catalyst life

Method used

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  • Process for preparing dehydrogenation catalysts for linear light hydrocarbons using stable active metal complexes
  • Process for preparing dehydrogenation catalysts for linear light hydrocarbons using stable active metal complexes
  • Process for preparing dehydrogenation catalysts for linear light hydrocarbons using stable active metal complexes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The carrier of embodiment 1 is on gamma-alumina carrier (manufactured by German BASF, specific surface area: 210m 2 / g, pore volume: 0.7cm 3 / g, average pore diameter: 8.5 nm) was used after pore diameter control by sintering at 800° C. for 5 hours. Heat-treated alumina has physical properties including, for example, 150m 2 / g specific surface area, 0.6cm 3 / g pore volume and 10nm average pore diameter, and has a double pore structure including 10nm or smaller mesopores and 50μm or larger macropores. Using the platinum precursor chloroplatinic acid (H 2 PtCl 6 ) and tin precursor tin chloride (SnCl 2 ), and based on the total weight of the catalyst, the amount of chloroplatinic acid was 0.2wt% and tin chloride were mixed in a nitrogen atmosphere at a molar ratio of 1.0. Next, the platinum-tin mixture was added to the solvent in an amount corresponding to the total pore volume of the support and dissolved. A solvent comprising ethanol / ethylene glycol / hydrochloric ...

Embodiment 2

[0026] The catalyst of Example 2 was prepared in the same manner as in Example 1, except that the tin / platinum molar ratio was changed to 2.0 when the tin-platinum complex solution was prepared. The catalyst was configured such that platinum and tin were distributed in a thickness of 120 μm on the outer surface of the carrier, and lithium was uniformly distributed in the carrier.

Embodiment 3

[0028] The catalyst of Example 3 was prepared in the same manner as in Example 1, except that the tin / platinum molar ratio was changed to 3.0 when the tin-platinum complex solution was prepared. The catalyst was configured such that platinum and tin were distributed in a thickness of 120 μm on the outer surface of the carrier, and lithium was uniformly distributed in the carrier.

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Abstract

The present invention relates to a catalyst showing improved selectivity and reactivity suitable for use by making C 9 -C 13 Dehydrogenation of paraffins to produce olefins, and more particularly to a technique for the preparation of catalysts configured using heat-treated supports with controlled pores and in which most of the metal components contained in the catalyst are not uniformly distributed as individual metals , but uniformly distributed in the form of an alloy in the carrier from the outer surface of the catalyst carrier, thus exhibiting high conversion and selectivity when used for dehydrogenation.

Description

technical field [0001] The present invention relates to a catalyst showing improved selectivity and reactivity suitable for use by making C 9 -C 13 Dehydrogenation of paraffins to olefins, and more particularly to a technique for the preparation of catalysts configured using heat-treated supports with controlled pores and in which most of the metal components contained in the catalyst are not in the form of individual metal It is uniformly distributed in the form of the catalyst carrier, but is evenly distributed in the form of an alloy in the carrier from the outer surface of the catalyst carrier, so it exhibits high conversion and selectivity when used for dehydrogenation. In particular, when preparing the catalyst, an organic solvent is used to support the metal, thereby suppressing the distribution of various metals in the catalyst, thereby increasing the intermetallic alloying rate, and thus using a dispersion stabilizer to increase the degree of dispersion of the active...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J23/42B01J35/00
CPCB01J37/088B01J37/18B01J23/62B01J23/624B01J23/6562B01J31/0202B01J37/0018B01J37/0203B01J37/0207B01J37/0213B01J2523/00B01J23/626C07C5/3337C07C2523/62B01J35/394B01J35/397B01J35/399B01J35/657B01J35/69B01J35/647B01J35/53B01J2235/00B01J2523/11B01J2523/31B01J2523/43B01J2523/828C07C11/02C07C11/12B01J35/40B01J35/50B01J35/51B01J35/651
Inventor 韩贤植刘荣山金镐东姜东君
Owner HEESUNG CATALYSTS CORP