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High selective catalyst

A high-selectivity, catalyst technology, applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, organic chemistry, etc., can solve the problems of low selectivity of target products, low conversion rate of raw materials, etc., achieve high template index, improve specific surface, The effect of increasing crystallinity

Active Publication Date: 2011-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that there are low conversion rate of raw materials in the oxalate ester hydrogenation process in the past literature, and the technical problem of target product selectivity is low. The hydrogen process has the advantages of high conversion rate of raw materials and high selectivity of the target product ethylene glycol

Method used

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  • High selective catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 120 grams of silicon-aluminum molar ratio SiO 2 / Al 2 o 350 ZSM-5 molecular sieve, 75 grams of 35% (weight) silica sol was added and mixed, extruded and dried at 110°C to obtain sample A-I.

[0032] Add 6 grams of tetrapropylammonium bromide, 12 grams of 1,6-hexamethylenediamine and 36 grams of distilled water in advance in the reaction kettle, and place 12 grams of sample A-I in the reaction kettle after being sealed above the porous stainless steel mesh at 180 The gas-solid phase treatment was carried out at ℃ for 160 hours. After the product was taken out, it was washed with distilled water, and after drying, it was roasted at 550°C in an air atmosphere to obtain a binder-free ZSM-5 molecular sieve carrier A with a specific surface of 450 square meters per gram and a molar ratio of silicon to aluminum of SiO 2 / Al 2 o 3 for 50.

[0033] Weigh 50 grams of the binder-free ZSM-5 molecular sieve carrier A made above, and prepare the catalyst according to the ...

Embodiment 2

[0035] Weigh 150 grams of silicon-aluminum molar ratio SiO 2 / Al 2 o 3 150 ZSM-5 molecular sieve, after adding 20 grams of 30% (weight) silica sol and mixing, extruded, dried at 130° C. to obtain sample B-I.

[0036] Add 3 gram tetrapropyl ammonium bromide, 15 gram 1, the mixture of 6-hexanediamine and 40 gram distilled water in advance in reaction kettle, place 15 gram samples B-I in the reaction kettle after sealing above the porous stainless steel mesh at 140 The gas-solid phase treatment was carried out at ℃ for 140 hours. After the product was taken out, it was washed with distilled water, dried, and then baked at 550°C in an air atmosphere to obtain a binder-free ZSM-5 molecular sieve carrier B with a specific surface of 500 square meters per gram and a silicon-aluminum molar ratio of SiO 2 / Al 2 o 3 for 150.

[0037] Take by weighing 50 grams of the binder-free ZSM-5 molecular sieve carrier B made above, prepare the catalyst by 38% Cu+0.1%V+0.05%La+0.2%Zr / ZSM-5 co...

Embodiment 3

[0039] Weigh 110 grams of silicon-aluminum molar ratio SiO 2 / Al 2 o 3 300 ZSM-48 molecular sieve, after adding 75 grams of water glass with a silicon oxide content of 30% (by weight) and mixing, extruding and drying at 130 ° C to obtain sample C-I.

[0040] 12 grams of tetrapropylammonium bromide, 5 grams of 1,6-hexanediamine and 35 grams of distilled water were added in advance in the reactor, and 12 grams of sample C-I was placed in the reactor after being sealed above the porous stainless steel mesh at 2110 The gas-solid phase treatment was carried out at ℃ for 180 hours. After the product was taken out, it was washed with distilled water, dried and roasted at 580°C in an air atmosphere to obtain a binder-free ZSM-48 molecular sieve carrier C with a specific surface of 560 square meters per gram and a molar ratio of silicon to aluminum of SiO 2 / Al 2 o 3 for 300.

[0041] Take by weighing 100 grams of the above-mentioned binder-free ZSM-48 molecular sieve carrier C w...

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Abstract

The invention relates to a high selective catalyst, which mainly solves the technical problems of low raw material conversion rate and low destination product selectivity during preparing ethylene glycol by oxalic ester hydrogenation in the prior art. An active ingredient, an auxiliary agent and a carrier are adopted in the catalyst. The catalyst comprises the following components in part by weight: a) 8 to 60 parts of active intergradient selected from copper, copper oxide or mixture thereof; b) more than 0 to 20 parts of at least one auxiliary agent selected from main group metal element, transition metal element or lanthanide compound; and c) 20 to 60 parts of carrier, wherein the carrier is selected from adhesive-free molecular sieve, the specific surface is 100 to 800 square meters per gram, and the molar ratio of Si to Al is 40 to full silicon. According to the technical scheme, the high selective catalyst well solves the problems, and can be applied to the industrial productionof preparing the ethylene glycol by hydrogenation of the oxalic ester.

Description

technical field [0001] The invention relates to a highly selective catalyst, in particular to a catalyst for producing ethylene glycol by catalytic hydrogenation of dimethyl oxalate or diethyl oxalate. Background technique [0002] Ethylene glycol (EG) is an important organic chemical raw material, mainly used in the production of polyester fiber, antifreeze, unsaturated polyester resin, lubricant, plasticizer, nonionic surfactant and explosives, etc. It can be used in industries such as paint, photographic developer, brake fluid and ink, as a solvent and medium for ammonium perborate, and for the production of special solvents such as glycol ether, etc., and has a wide range of uses. [0003] At present, my country has surpassed the United States to become the world's largest consumer of ethylene glycol, and the average annual growth rate of domestic apparent consumption reached 17.4% from 2001 to 2006. Although my country's ethylene glycol production capacity and output h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/48B01J29/46C07C31/20C07C29/149
CPCY02P20/52
Inventor 谢在库刘俊涛王万民孙凤侠
Owner CHINA PETROLEUM & CHEM CORP
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