A series of AS supports with different crystal sizes, textural structure and acidity were synthesized via a hydrothermal crystallization method. The NiMo/AS-Mn catalyst with relatively high B acid and total acid content combining with relatively small crystal size is beneficial for the isomerization reactions and eliminating the diffusion resistance in the DBT and 4,6-DMDBT HDS.<br/>NiMo/AS-Mn showed the maximum kHDS of the DBT amd 4,6-DMDBT due to its synergistic effect of the highest BET specific surface area and smallest crystal sizes of AS-Mn, the highest B acid and total acid contents of the catalysts.<br/>The higher total acid content of NiMo/AS-Mn could favor the HYD selectivity of DBT HDS, and the higher B acid content could favor the ISO selectivity of 4,6-DMDBT HDS. For DBT HDS, HYD was the preferential route over NiMo/AS-Mn, while for 4,6-DMDBT HDS reaction, ISO was the preferential route. The ISO route greatly enhanced the 4,6-DMDBT HDS performance of NiMo/AS-Mn.

Controllable synthesis of spherical Al-SBA-16 mesoporous materials with different crystal sizes and its high isomerization performance for hydrodesulfurization

2019 Spring National Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.