介孔Al₂O₃催化剂上的催化热解

Catalytic Pyrolysis of Over Mesoporous Al₂O₃ Catalysts.

作者信息

Kim Young-Min, Rhee Gwang Hoon, Ko Chang Hyun, Kim Ki Hoon, Jung Kyeong Youl, Kim Ji Man, Park Young-Kwon

机构信息

Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon 24252, Korea.

Department of Mechanical and Information Engineering, University of Seoul, Seoul 02504, Korea.

出版信息

J Nanosci Nanotechnol. 2018 Sep 1;18(9):6300-6303. doi: 10.1166/jnn.2018.15653.

DOI:10.1166/jnn.2018.15653

PMID:29677785

Abstract

The thermal and catalytic pyrolysis of Pinus densiflora (P. densiflora) were performed to test the catalytic cracking efficiency of two mesoporous Al2O3 catalysts with different surface areas. Thermogravimetric analysis (TGA) of P. densiflora showed that the differential TG (DTG) peak heights obtained from catalytic pyrolysis were smaller than those of non-catalytic pyrolysis due to the conversion of the reaction intermediates to coke. Pyrolyzer-gas chromatography/mass spectrometry analysis/flame ionization detection (Py-GC/MS/FID) suggested that using the Al2O3 catalysts, the yields of phenols and levoglucosan decreased with a concomitant increase in the yields of aldehydes, alcohol, ketones, and furans. Between the two catalysts, Al2O3-B prepared by spray pyrolysis showed higher cracking efficiency than Al2O3-A prepared by hydrothermal method because of its larger surface area.

摘要

对赤松进行了热解和催化热解实验，以测试两种具有不同表面积的介孔Al2O3催化剂的催化裂解效率。赤松的热重分析（TGA）表明，由于反应中间体转化为焦炭，催化热解得到的微分TG（DTG）峰高低于非催化热解。热解器-气相色谱/质谱分析/火焰离子化检测（Py-GC/MS/FID）表明，使用Al2O3催化剂时，酚类和左旋葡聚糖的产率降低，同时醛类、醇类、酮类和呋喃类的产率增加。在这两种催化剂中，喷雾热解制备的Al2O3-B由于其较大的表面积，显示出比水热法制备的Al2O3-A更高的裂解效率。