Hernández-Maldonado Arturo J, Yang Ralph T
Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, USA.
J Am Chem Soc. 2004 Feb 4;126(4):992-3. doi: 10.1021/ja039304m.
Desulfurization of a commercial diesel fuel by vapor-phase ion exchange (VPIE) copper(I) faujasite zeolites was studied in a fixed-bed adsorber operated at ambient temperature and pressure. The zeolite adsorbed approximately five thiophenic molecules per unit cell. After treating 18 cm3 of fuel, the cumulative average sulfur concentration detected was 0.032 ppmw-S. GC-FPD results showed that the pi-complexation sorbents selectively adsorbed highly substituted thiophenes, benzothiophenes, and dibenzothiophenes from diesel, which is not possible by using conventional hydrodesulfurization (HDS) reactors. The high sulfur selectivity and high sulfur capacity of the VPIE Cu(II)-zeolites were due to pi-complexation.
在常温常压下运行的固定床吸附器中，研究了通过气相离子交换（VPIE）铜（I）八面沸石对商业柴油进行脱硫。该沸石每单位晶胞吸附约五个噻吩类分子。处理18立方厘米燃料后，检测到的累积平均硫浓度为0.032 ppmw-S。气相色谱 - 火焰光度检测（GC-FPD）结果表明，π-络合吸附剂可从柴油中选择性吸附高度取代的噻吩、苯并噻吩和二苯并噻吩，而使用传统的加氢脱硫（HDS）反应器则无法做到这一点。VPIE Cu（II）-沸石的高硫选择性和高硫容量归因于π-络合。
