Cecilia Juan Antonio, García-Sancho Cristina, Jiménez-Gómez Carmen Pilar, Moreno-Tost Ramón, Maireles-Torres Pedro
Universidad de Málaga, Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Campus de Teatinos s/n, 29071 Málaga, Spain.
Materials (Basel). 2018 Aug 31;11(9):1569. doi: 10.3390/ma11091569.
Increasing worldwide biodiesel production has led to the generation of an important glycerol surplus, which needs to be valorized in order to improve the economic and environmental sustainability of the biodiesel industry. In this context, glycerol dehydration to acrolein by acid catalysis appears to be a potential route of glycerol valorization, since acrolein is an important intermediate for many chemical industries. The main drawback of this catalytic process is catalyst deactivation. Different alternatives have been proposed for overcoming it, such as the use of mesoporous materials in order to facilitate the diffusion of glycerol and reaction products, thus minimizing deactivation. This review compiles the main achievements of the use of mesoporous silica-containing materials that have been deployed either as a catalyst or for support in glycerol dehydration to acrolein. Thus, the effect of mesoporosity on both catalytic performance and deactivation will be discussed, as well as the blocking of pores by coke deposition.
全球生物柴油产量的不断增加导致了大量甘油过剩，为提高生物柴油行业的经济和环境可持续性，需要对甘油进行增值利用。在这种背景下，通过酸催化将甘油脱水制丙烯醛似乎是甘油增值利用的一条潜在途径，因为丙烯醛是许多化学工业的重要中间体。该催化过程的主要缺点是催化剂失活。人们已经提出了不同的替代方法来克服这一问题，例如使用介孔材料以促进甘油和反应产物的扩散，从而使失活最小化。本综述汇编了含介孔二氧化硅材料在甘油脱水制丙烯醛中用作催化剂或载体的主要成果。因此，将讨论介孔对催化性能和失活的影响，以及焦炭沉积对孔的堵塞。
