Kinetics and Mechanism of Thiophene Hydrodesulfurization over Carbon-Supported Transition Metal Sulfides

Mechanism and Site Requirements of Thiophene Hydrodesulfurization Catalyzed by Supported Pt Clusters

Hydrodesulfurization (HDS) processes remove sulfur atoms from hydrocarbons by chemical reduction to hydrogen sulfide using H2 with transition metals and their sulfides as catalysts. Mechanistic and structural insights, concerning reaction pathways and catalysts, respectively, are required to design more effective HDS catalysts, with higher rates at lower H2 pressures, so as to meet emerging req...

Thiophene hydrodesulfurization catalysis on supported Ru clusters: Mechanism and site requirements for hydrogenation and desulfurization pathways

Kinetic and isotopic methods were used to probe elementary steps and site requirements for thiophene hydrogenation and desulfurization on Ru metal clusters. Turnover rates for these reactions were unaffected by whether samples were treated in H2 or H2S to form metal and sulfide clusters, respectively, before reaction. These data, taken together with the rate and extent of sulfur removal from us...

Transition metal catalyzed synthesis of aryl sulfides.

The presence of aryl sulfides in biologically active compounds has resulted in the development of new methods to form carbon-sulfur bonds. The synthesis of aryl sulfides via metal catalysis has significantly increased in recent years. Historically, thiolates and sulfides have been thought to plague catalyst activity in the presence of transition metals. Indeed, strong coordination of thiolates ...

Hydrothermal liquefaction of microalgae over transition metal supported TiO2 catalyst

Hydrothermal liquefaction (HTL) of microalgae Nannochloropsis (NAS) over various transition metal M/TiO2 (M = Fe, Co, Ni, Mo, and Mn) was investigated. Ni/TiO2 was the most effective catalyst to improve the yield and quality of biocrude and the liquefaction conversion. Ni/TiO2 was characterized by XRD, XRF, and XPS. The research of Effect of reaction temperature on HTL of NAS over Ni/TiO2 sugge...

Transition Metal Sulfide Catalysts for Petroleum Upgrading – Hydrodesulfurization Reactions