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高效贵金属促进的双金属钴催化剂用于乙醛二甲基乙缩醛的选择性合成。

Efficient noble metal promoted bimetallic cobalt catalysts in the selective synthesis of acetaldehyde dimethyl acetal.

作者信息

Sheikh Kalim A, Zevaco Thomas A, Jelic Jelena, Studt Felix, Bender Michael

机构信息

Karlsruher Institut für Technologie (KIT) Eggenstein-Leopoldshafen Germany

BASF SE Ludwigshafen Germany.

出版信息

RSC Adv. 2023 Jul 26;13(33):22698-22709. doi: 10.1039/d3ra02784h.

DOI:10.1039/d3ra02784h
PMID:37502823
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10369129/
Abstract

Herein we report the one-pot cobalt catalysed synthesis of the dimethylacetal of acetaldehyde from synthesis gas and methanol. The product can be used as a fuel additive either as it is or after transacetalisation with long-chain alcohols. The product is obtained at moderate temperatures in good selectivities and high CO-conversions. A variation of the promotor metal (Au, Pt, Pd, and Ru) and of the support (γ-AlO and CeO) in the catalyst was conducted, which showed a great impact of both the support and promotor on the activity and structure of the catalyst. Furthermore, a specific variation of temperatures and pressure for the most active catalyst and a model catalyst was conducted giving an interesting insight into ongoing processes.

摘要

在此，我们报道了一种由合成气和甲醇通过一锅法钴催化合成乙醛二甲醇缩醛的方法。该产物可直接用作燃料添加剂，也可与长链醇进行缩醛交换后使用。该产物在中等温度下以良好的选择性和高的一氧化碳转化率获得。对催化剂中的促进剂金属（金、铂、钯和钌）以及载体（γ-氧化铝和氧化铈）进行了变化研究，结果表明载体和促进剂对催化剂的活性和结构都有很大影响。此外，对活性最高的催化剂和一种模型催化剂进行了温度和压力的特定变化研究，这为正在进行的过程提供了有趣的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c5cc/10369129/160ffd27adc6/d3ra02784h-f5.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c5cc/10369129/160ffd27adc6/d3ra02784h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c5cc/10369129/a8dffdab99ea/d3ra02784h-s1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c5cc/10369129/d638c8f575b3/d3ra02784h-s7.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c5cc/10369129/426497fe36ac/d3ra02784h-s10.jpg
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