title: A parallel colorimetric method for the rapid discovery and optimization of heterogeneous hydrodesulfurization catalysts.
abstract: 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.
authors.affiliation: Chem & Bio Technologies/Materials Chemistry Departments, Sandia National Laboratories, P.O. Box 5800 MS 0888, Albuquerque, NM 87185-0888, USA.
authors.forename: Chad L
authors.initials: CL
authors.lastname: Staiger
authors.forename: Douglas A
authors.initials: DA
authors.lastname: Loy
authors.forename: Gregory M
authors.initials: GM
authors.lastname: Jamison
authors.forename: Duane A
authors.initials: DA
authors.lastname: Schneider
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Cornelius