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在氧化铝上从废弃脂肪醇中选择性生产用于生物基化学品的生物基线性α-烯烃。

Selective Production of Bio-Based Linear Alpha-Olefin from Wasted Fatty Alcohol on AlO for Bio-Based Chemicals.

作者信息

Lee Hye-Jin, Choi Il-Ho, Kim Seung-Wook, Hwang Kyung-Ran

机构信息

Energy Resource Upcycling Research Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea.

Department of Chemical and Biological Engineering, Korea University, Seoul 136701, Korea.

出版信息

Polymers (Basel). 2021 Aug 25;13(17):2850. doi: 10.3390/polym13172850.

DOI:10.3390/polym13172850
PMID:34502889
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8433876/
Abstract

The catalytic dehydration of a bio-based fatty alcohol was performed using AlO prepared by solvothermal synthesis for selective production of long-chain linear-alpha-olefins (LAO). The effect of the synthesis temperature of alumina precursors on the dehydration of 1-octadecanol (CHO) was examined based on the textural properties and Lewis acid-base properties of the catalysts. Amorphous alumina synthesized at 325 °C showed the highest surface area (233.07 m/g) and total pore volume (1.237 cm/g) among the catalysts and the best dehydration results: 93% conversion, 62% selectivity of 1-octadecene (CH), and 89% LAO purity. This was attributed to the increased Al/O ratio and atomic concentration of surface O in alumina, which were important factors in the catalytic dehydration of 1-octadecanol through the synergistic catalysis of acid-base pairs. The produced bio-based LAO can be key intermediates for synthesis of oxo alcohols and poly-alpha-olefins, as alternatives to petroleum-based LAO to achieve carbon neutrality in chemical industry.

摘要

采用溶剂热合成法制备的AlO对生物基脂肪醇进行催化脱水，以选择性生产长链线性α-烯烃（LAO）。基于催化剂的织构性质和Lewis酸碱性质，研究了氧化铝前驱体合成温度对1-十八醇（CHO）脱水的影响。在325℃合成的无定形氧化铝在催化剂中表现出最高的比表面积（233.07 m/g）和总孔体积（1.237 cm/g），以及最佳的脱水结果：转化率93%，1-十八烯（CH）选择性62%，LAO纯度89%。这归因于氧化铝中Al/O比和表面O原子浓度的增加，这是通过酸碱对的协同催化作用实现1-十八醇催化脱水的重要因素。所生产的生物基LAO可作为合成羰基醇和聚α-烯烃的关键中间体，替代石油基LAO，以实现化学工业的碳中和。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/b18818e9576f/polymers-13-02850-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/68f18a41f115/polymers-13-02850-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/db58f57ceada/polymers-13-02850-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/165a8ae5e00f/polymers-13-02850-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/b98cfd773bd6/polymers-13-02850-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/b46f1de06950/polymers-13-02850-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/061fdc491091/polymers-13-02850-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/1a6b2557521e/polymers-13-02850-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/4ed91ef1247b/polymers-13-02850-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/3ed4dc2c41c3/polymers-13-02850-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/b18818e9576f/polymers-13-02850-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/68f18a41f115/polymers-13-02850-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/db58f57ceada/polymers-13-02850-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/165a8ae5e00f/polymers-13-02850-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/b98cfd773bd6/polymers-13-02850-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/b46f1de06950/polymers-13-02850-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/061fdc491091/polymers-13-02850-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/1a6b2557521e/polymers-13-02850-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/4ed91ef1247b/polymers-13-02850-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/3ed4dc2c41c3/polymers-13-02850-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5d83/8433876/b18818e9576f/polymers-13-02850-g010.jpg

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