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Adsorptive Separation of Infinitesimal Sulfur Oxide in Naphtha —Reactivation of Silica Gel Using Toluene and Dimethyl Ether—
Oxidative desulfurization Adsorption Naphtha Dimethyl ether
2009/8/4
Adsorption of sulfur oxide is one of the key techniques for producing extra-low-sulfur content naphtha during oxidative desulfurization. Reactivation and repeated use of adsorbent are quite important...
Synthesis of Di-t-butyl Polysulfide from Isobutene, Hydrogen Sulfide, and Sulfur (Part 2) Catalytic Behavior of MFI Zeolites
Polysulfide synthesis Zeolite catalyst MFI zeolite Gallium Reaction mechanism
2009/8/4
Synthesis of di-t-butyl polysulfide from isobutene, hydrogen sulfide and sulfur was carried out at 125°C in an autoclave over MFI zeolite catalysts isomorphously framework-substituted with Al, Ga, an...
Sulfidation State and Sulfur Behavior on Mo-based HDS Catalysts Supported on TiO2 Using 35S Tracer Methods
Sulfidation state Hydrodesulfurization High surface titania Molybdenum catalyst
2009/8/4
A 35S radioisotope pulse tracer method using 35S-labeled H2S was used to investigate the sulfidation state of Mo-based catalysts supported on TiO2. Despite the coverage of Mo species on the TiO2 supp...
Analysis of Sulfur Compounds in Straight-run Naphtha and FCC Gasoline
Sulfur containing compound Petroleum naphtha FCC gasoline
2009/8/4
Sulfur-containing compounds in straight-run naphtha and catalytic-cracked gasoline were analyzed quantitatively using gas chromatography with a sulfur chemiluminescence detector. Pretreatment of the s...
Effect of Extraframework Aluminum of USY Zeolite on Sulfur Tolerance of Pd-Pt/USY Catalyst
Extraframework aluminum Delaminated USY zeolite Palladium platinum catalyst
2009/8/4
A series of bimetallic Pd-Pt (mole ratio Pd:Pt=4:1) catalysts supported on ultrastable Y (USY) zeolites and delaminated USY zeolites were prepared and characterized by XRD, 27Al MAS NMR and CO adsorp...
Room Temperature Sulfur Removal from LPG with Adsorbent for Fuel Cell Application — Adsorption Behavior of Sulfur Compounds —
Adsorptive sulfur removal β zeolite Ceria Fuel cell LPG
2009/7/28
LPG contains 5-10 volppm of sulfur compounds such as thiols, sulfides, and disulfides. Use of LPG as the hydrogen source for fuel cells will require the removal of sulfur content to the ppb level. Act...
Development of New CoMo HDS Catalyst for Ultra-low Sulfur Diesel Fuel Production
Cobalt molybdenum catalyst Co-Mo-S phase Hydrodesulfurization
2009/7/28
Introduction of the legal requirement for <10-ppm sulfur in diesel fuels is intended to help reduce diesel exhaust emissions, such as nitrogen oxide and particulate matter, as well as CO2 emissions de...
Effect of Sulfur Compound Addition on Hydrodesulfurization of Coker Gas Oil
Hydrodesulfurization Coker gas oil Nickel molybdenum catalyst
2009/7/28
To clarify the effect of sulfur compound addition on catalytic activity and catalyst deactivation, hydrodesulfurization (HDS) of coker gas oil (CGO) was carried out over demetallation catalysts, meta...
Adsorptive Separation of Infinitesimal Sulfur Oxide in Naphtha—Screening of Adsorbents—
Oxidative desulfurization Adsorption Separation Naphtha Silica gel
2009/7/27
A model naphtha and benzothiophene-1,1-oxide (BTDO) were used to evaluate five commercial adsorbents in order to select a high-performance adsorbent for the separation of sulfur oxides generated in o...
Investigation of Sulfur Behavior on Mo-based Hydrodesulfurization Catalysts Supported on High Surface Area TiO2 by 35S Radioisotope Tracer Method
Hydrodesulfurization High surface area titania Molybdenum catalyst
2009/7/27
Mo catalysts were prepared by impregnation of titania synthesized by the pH swing method which provides a TiO2 carrier with a high specific surface area (134 m2·g−1) and excellent mechanical pr...
Development of Hydrodesulfurization Catalysts Using Molybdenum Complex with Molybdenum-sulfur Bonds (Part 1) Effect of Activation Method on Catalytic Activity
Hydrodesulfurization Dibenzothiophene Molybdenum dithiocarbamate
2009/7/24
The catalytic precursors of alumina-supported molybdenum dithiocarbamate (Mo-DTC) and molybdenum dithiophosphate (Mo-DTP) were assessed as catalysts for hydrodesulfurizastion (HDS). The effect of the...
Formation of Free Sulfur in Hydrodesulfurized Gas Oil—Precautions for Pilot Test of Ultra Deep Hydrodesulfurization Catalysts—
Ultra deep hydrodesulfurization Free sulfur Hydrogen sulfide Light gas oil
2009/7/24
Special precautions for evaluating ultra deep gas oil hydrodesulfurization catalysts in the pilot plant were investigated. Analysis using gas chromatograph atomic emission detector (GC-AED) and GC-MS...
Isomerization of Light Naphtha over Sulfur Tolerant Pd/SO42−/ZrO2-Al2O3 Catalyst
Sulfated zirconia catalyst Palladium catalyst Light naphtha
2009/7/24
Isomerization of organic sulfur containing light naphtha was studied over metal sulfated zirconium catalyst. Even in the presence of sulfur compounds, Pd/SO42−/Zr02-Al2O3 catalyst indicated th...
Sulfur Tolerance of Pd, Pt and Pd-Pt Catalysts Supported on Amorphous Silica
Noble metal catalyst Silica support Pore diameter Sulfur tolerance Aromatics hydrogenation
2009/7/24
Effect of pore structure of silica support on sulfur tolerance and tetralin hydrogenation activity of Pd, Pt and Pd-Pt catalysts was investigated. Pore diameter of SiO2 supports affected the sulfur t...
Deactivation of Pt/SO42−/ZrO2 Catalyst with Sulfur Compounds and Preventive Measures
Platinum catalyst Sulfated zirconia catalyst Isomerization
2009/7/24
Hydrodesulfurization of feed oil stocks is essential for the industrial isomerization process of light naphtha, because the isomerization catalysts are deactivated by small amounts of sulfur compound...