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Carboxylate Hydrogenation Copper-Based Catalyst

A technology of copper-based catalyst and carboxylate, which is applied in the field of catalytic chemistry, can solve the problems of poor catalyst stability, low conversion rate of raw materials, high hydrogen ester, etc., and achieve high activity and stability, and good technical effects

Active Publication Date: 2018-10-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems to be solved by the present invention is that existing carboxylic acid ester hydrogenation technology has technical problems such as high hydrogen-ester ratio, low raw material conversion rate, alcohol selectivity and poor catalyst stability. A new hydrogenation copper hydrogenation technology is provided This catalyst has the advantages of low hydrogen-ester ratio, high raw material conversion rate, high alcohol selectivity and good catalyst stability in the reaction of hydrogenation of carboxylate to alcohol

Method used

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  • Carboxylate Hydrogenation Copper-Based Catalyst
  • Carboxylate Hydrogenation Copper-Based Catalyst
  • Carboxylate Hydrogenation Copper-Based Catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 30.2 grams of copper nitrate trihydrate, 55.1 grams of zinc nitrate hexahydrate, and 275.8 grams of aluminum nitrate nonahydrate in a three-necked flask, add 1000 grams of distilled water to dissolve them completely, and heat to 90°C under stirring; weigh 133.4 grams of carbonic acid Put sodium in a beaker, add 1000 g of distilled water to dissolve it completely, and transfer it to a dropping funnel to obtain a precipitant. In the three-necked flask, add the prepared precipitant dropwise under the state of heating and stirring the mixed salt solution. After the dropwise addition, reflux and stir for 5 hours, filter, wash, dry at 80°C for 12 hours, and roast at 450°C for 6 hours. Catalyst C1 was obtained, and the catalyst composition is shown in Table 1.

Embodiment 2

[0031]Weigh 302 grams of copper nitrate trihydrate, 146.9 grams of zinc nitrate hexahydrate, and 220.7 grams of aluminum nitrate nonahydrate in a three-necked flask, add 2000 grams of distilled water to dissolve them completely, and heat to 90°C under stirring; weigh 185.9 grams of carbonic acid Put sodium in a beaker, add 2000 g of distilled water to dissolve it completely, and transfer it to a dropping funnel to obtain a precipitant. In the three-necked flask, add the prepared precipitant dropwise under the state of heating and stirring the mixed salt solution. After the dropwise addition, reflux and stir for 5 hours, filter, wash, dry at 80°C for 12 hours, and roast at 450°C for 6 hours. Catalyst C2 was obtained, and the catalyst composition is shown in Table 1.

Embodiment 3

[0033] Weigh 241.6 grams of copper nitrate trihydrate, 73.4 grams of zinc nitrate hexahydrate, and 367.8 grams of aluminum nitrate nonahydrate in a three-necked flask, add 2000 grams of distilled water to dissolve them completely, and heat to 90°C under stirring; weigh 222.0 grams of carbonic acid Put sodium in a beaker, add 2000 g of distilled water to dissolve it completely, and transfer it to a dropping funnel to obtain a precipitant. In the three-necked flask, add the prepared precipitant dropwise under the state of heating and stirring the mixed salt solution. After the dropwise addition, reflux and stir for 5 hours, filter, wash, dry at 80°C for 12 hours, and roast at 450°C for 6 hours. Catalyst C3 was obtained, and the catalyst composition is shown in Table 1.

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Abstract

The invention relates to a copper-based catalyst for carboxylate hydrogenation to mainly solve the technical problems of too high hydrogen / ester ratio, low raw material conversion rate and poor product selectivity of present carboxylate hydrogenation technologies. The catalyst comprises: a, 10-50wt% of copper or oxide thereof; b, 0-20wt% of at least one element selected from group IIB in Elements Periodic Table, or oxide thereof; c, 0-10wt% of at least one element selected from group VIB in the Elements Periodic Table, or oxide thereof; and d, 30-75wt% of a carrier selected from at least one of silicon oxide, alumina and molecular sieve, wherein the content of the above component b and the content of the above component c cannot be 0 simultaneously. The catalyst disclosed in the invention well solves the problems, and can be used in industrial production for producing alcohols through carboxylate hydrogenation.

Description

technical field [0001] The invention belongs to the field of catalytic chemistry, in particular to a copper-based catalyst for hydrogenation of carboxylate. Background technique [0002] Ethanol is widely used in food, medicine, chemical industry, fuel, national defense and other industries. As a very important component of clean fuel and gasoline anti-knock agent, it can greatly reduce the emission of pollutants from combustion. my country is the second largest producer and consumer of gasoline in the world. In the era of high oil prices, fuel substitution is one of the effective ways to ensure national energy security and reduce costs. Studies have shown that using E10 ethanol gasoline (10% ethanol) for vehicles can increase the octane number by 3%, reduce CO2 emissions by 25-30%, and reduce CO2 emissions. 2 About 10%. Therefore, the development of ethanol gasoline is of great significance to improving the environment and realizing sustainable development. [0003] Alon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J23/885B01J29/78B01J29/48B01J23/83B01J23/72C07C31/08C07C29/149
Inventor 刘仲能徐晓清涂云宝刘革
Owner CHINA PETROLEUM & CHEM CORP