Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China.
Appl Biochem Biotechnol. 2012 Sep;168(1):174-82. doi: 10.1007/s12010-011-9398-5.
Mesoporous materials possess a hexagonal array of uniform mesopores, high surface areas, and moderate acidity. They are one of the important catalysts in the field of catalytic pyrolysis. In this paper, mesoporous materials of Al-MCM-41, La-Al-MCM-41, and Ce-Al-MCM-41 were synthesized, characterized, and tested as catalysts in the cellulose catalytic pyrolysis process using a fixed bed pyrolysis reactor. The results showed that mesoporous materials exhibited a strong influence on the pyrolytic behavior of cellulose. The presence of these mesoporous molecular sieve catalysts could vary the yield of products, which was that they could decrease the yield of liquid and char and increase the yield of gas product, and could promote high-carbon chain compounds to break into low-carbon chain compounds. Mesoporous molecular sieve catalysts were benefit to the reaction of dehydrogenation and deoxidation and the breakdown of carbon chain. Further, La-Al-MCM-41 and Ce-Al-MCM-41 catalysts can produce more toluene and 2-methoxy-phenol, as compared to the non-catalytic runs.
介孔材料具有规则的六方排列介孔、高比表面积和适中的酸度。它们是催化热解领域的重要催化剂之一。本文合成了 Al-MCM-41、La-Al-MCM-41 和 Ce-Al-MCM-41 介孔材料，并在固定床热解反应器中用作纤维素催化热解过程的催化剂进行了测试。结果表明，介孔材料对纤维素的热解行为有很强的影响。这些介孔分子筛催化剂的存在可以改变产物的产率，即可以降低液体和焦炭的产率，增加气体产物的产率，并可以促进长碳链化合物断裂成低碳链化合物。介孔分子筛催化剂有利于脱氢和脱氧反应以及碳链的断裂。此外，与非催化反应相比，La-Al-MCM-41 和 Ce-Al-MCM-41 催化剂可以产生更多的甲苯和 2-甲氧基苯酚。
