The development and application of catalysts for ultra-deep hydrodesulfurization of diesel

The history and current status of research concerning preparation and application technology for diesel ultra-deep hydrodesulfurization (HDS) catalysts were summarized. As a result of systematic research aimed at understanding the fundamental mechanism of ultra-deep HDS catalysis, various technology for the preparation of HDS catalysts have been developed, including novel alumina supports, as well as methods for tuning the surface properties of catalysts and otherwise modifying these materials so as to improve alkyl transfer performance. The result of these improvements is that a number of ultra-deep HDS catalysts with excellent performance, such as FHUDS-5 and FHUDS-6, have been developed. In addition, parallel research work investigating the interactions between different types of HDS catalysts and different hydrotreatment reactor zones has developed stacked catalyst technology that allows for the optimization of catalytic performance, so as to meet the demands of commercial production facilities for ultra-low-sulfur diesel.

摘要合成了5%Ni/Mn-ZnO吸附剂体系, 并在固定床上考察了Mn的掺杂对该吸附剂的吸附脱硫性能的影响. 8%MnO掺杂的5%Ni/MnO-ZnO吸附剂抗烧结性能显著提高, 并且吸附剂的脱硫活性和再生活性均有较大提高, 三次再生后的脱硫率仍比一次再生的无Mn掺杂的5%Ni/ZnO吸附剂的脱硫率高出约4%. XRD表征显示掺杂后的吸附剂有ZnMnO3生成.

A summary of research efforts related to the design, synthesis, and application of ultra-deep hydrodesulfurization catalysts for diesel fuels is presented. Progress in the field is discussed, including the preparation of novel supports and the development of new technigues for tuning active metal surface properties, improving alkyl transfer performance and increasing the use of stacked catalysts.Figure optionsDownload as PowerPoint slide