A parallel colorimetric method for the rapid discovery and optimization of heterogeneous hydrodesulfurization catalysts.
A spectrophotometric based, parallel approach to screen heterogeneous catalysts for hydrodesulfurization has been developed. The method utilizes optical changes resulting from the hydrodesulfurization of 1,1'-binaphthothiophene to 1,1'-binaphthyl to determine catalyst activity. Hydrodesulfurization of 1,1'-binaphthothiophene to 1,1'-binaphthyl results in a loss of conjugation in the binaphthyl ring system. This results in a blue shift of more than 60 nm in the UV-vis spectrum. Since only small amounts of the HDS catalyst and 1,1'-binaphthothiophene are required, a large number of catalysts may be screened simultaneously. The synthesis of the 1,1'-binaphthothiophene and conditions for HDS catalyst screening are described.
Staiger
Chad L
CL
Chem & Bio Technologies/Materials Chemistry Departments, Sandia National Laboratories, P.O. Box 5800 MS 0888, Albuquerque, NM 87185-0888, USA.
Loy
Douglas A
DA
Jamison
Gregory M
GM
Schneider
Duane A
DA
Cornelius
Christopher J
CJ