Design of Acid Site in Zeolite for Cracking of Heavy Oil

在大孔硅酸铝固体酸催化剂和MoO_3/Al_2O_3混合催化剂上进行了烷基萘的脱烷基反应。当以氧化铝为载体的硅单层作为固体酸时，选择性较高。这一发现可以应用于一种新的工艺，将重油中难以分解和使用的成分有效地转化为柴油、汽油和化学资源。另一方面，密度泛函计算表明，SiOHAl两端的压缩作用使酸强度增大。这种压缩被认为是由于晶体结构造成的。得出了酸位设计的策略。SiO_2单分子膜的催化性能与表面SiOH基团压缩排列的结构有关。

Dealkylation of alkylnaphthalene proceeded on a mixture of macroporous aluminosilicate solid acid catalyst and MoO3/Al2O3. Where a silica monolayer supported by alumina was used as the solid acid, the selectivity was high. This finding can be applied to a new process for efficient conversion of the components difficult to decompose and use in heavy oils into diesel, gasoline and chemical resources. On the other hand, it was clarified by DFT calculations that the compressoion from both ends of SiOHAl made the acid strength. The compression was clarified to be due to the crystal structure. A strategy of design of acid site is obtained. The catalytic ability of silica monolayer can be related with the structure where SiOH groups arranged on the surface as compressed.