当前位置：
X-MOL 学术
›
Int. J. Energy Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Alkane isomerization over sulfated zirconia solid acid system
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-01-10 , DOI: 10.1002/er.4995 Pengzhao Wang 1 , Yuanyuan Yue 1 , Tinghai Wang 1 , Xiaojun Bao 2
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-01-10 , DOI: 10.1002/er.4995 Pengzhao Wang 1 , Yuanyuan Yue 1 , Tinghai Wang 1 , Xiaojun Bao 2
Affiliation
|
Sulfated zirconia (SZ) and its modified versions attract great interest in recent years, because of their promising potential in n‐alkane isomerization. The oxidative and protonation routes are active and interactional in n‐alkane activation over SZ catalysts. The bimolecular reaction becomes dominant with increasing the density of active sites on SZ surface and decreasing the carbon chain of feed. Pentane and hexane are mainly isomerized by protonated cyclopropane mechanism, while which is thermodynamically unflavored for n‐butane isomerization. The deactivation of SZ catalysts is primarily caused by the loss of superacidity and oxidizing ability, resulted from the structure changes of sulfate species. Several strategies for improving the activity of SZ are reviewed. The intrinsic structure‐reactivity relationship of SZ catalysts in alkane isomerization is updated to illuminate the prerequisite for the highly active catalysts and the mechanism of active sites formation. The applications of Pt/SZ in fixed‐bed and unmodified SZ in circulating fluidizing bed in light alkanes isomerization are compared with the conventional technologies based on the chlorinated alumina catalysts. Finally, the future study of SZ catalysts is outlooked from the academic investigations to the industrial applications.
中文翻译：
硫酸化氧化锆固体酸体系上的烷烃异构化
硫化锆（SZ）及其改良版由于其在正烷烃异构化方面的潜力而引起了人们的极大兴趣。氧化和质子化途径在SZ催化剂的正构烷烃活化中是活跃的和相互作用的。随着SZ表面活性位点密度的增加和进料碳链的减少，双分子反应成为主导。戊烷和己烷主要是通过质子化的环丙烷机理异构化的，而对于n丁烷异构化。SZ催化剂的失活主要是由于硫酸盐种类的结构变化导致的超酸性和氧化能力的丧失。综述了几种改善SZ活性的策略。SZ催化剂在烷烃异构化过程中的固有结构-反应性关系得到更新，阐明了高活性催化剂的先决条件和活性位点形成的机理。将Pt / SZ在固定床和未改性SZ在轻链烷烃异构化中的循环流化床中的应用与基于氯化氧化铝催化剂的常规技术进行了比较。最后，从学术研究到工业应用展望了SZ催化剂的未来研究。
更新日期：2020-01-10
中文翻译：
硫酸化氧化锆固体酸体系上的烷烃异构化
硫化锆（SZ）及其改良版由于其在正烷烃异构化方面的潜力而引起了人们的极大兴趣。氧化和质子化途径在SZ催化剂的正构烷烃活化中是活跃的和相互作用的。随着SZ表面活性位点密度的增加和进料碳链的减少，双分子反应成为主导。戊烷和己烷主要是通过质子化的环丙烷机理异构化的，而对于n丁烷异构化。SZ催化剂的失活主要是由于硫酸盐种类的结构变化导致的超酸性和氧化能力的丧失。综述了几种改善SZ活性的策略。SZ催化剂在烷烃异构化过程中的固有结构-反应性关系得到更新，阐明了高活性催化剂的先决条件和活性位点形成的机理。将Pt / SZ在固定床和未改性SZ在轻链烷烃异构化中的循环流化床中的应用与基于氯化氧化铝催化剂的常规技术进行了比较。最后，从学术研究到工业应用展望了SZ催化剂的未来研究。
京公网安备 11010802027423号