Saudi Arabian Oil Company

Boreskov Institute of Catalysis

Suadi Arabian Oil Company

Mikhail Kerzhentsev

Omer Refa Koseoglu

Valentin Parmon

Zinfer Ismagilov

Svetlana Yashnik

Yaming Jin

Abdennour Bourane

Anton Salnikov

Svetlana Yahnik

Abdenour Bourane

A catalytic composition is disclosed, which exhibits an X-ray amorphous oxide with a spinel formula, and crystals of ZnO, CuO, and at least one Group VIB metal oxide, and preferably, at least one acidic oxide of B, P. or Si, as well. The composition is useful in oxidative processes for removing sulfur from gaseous hydrocarbons.

Methods for gas phase oxidative desulphurization of hydrocarbons using CuZnAl catalysts promoted with group VIB metals

A catalytic composition is disclosed, which exhibits an X-ray amorphous oxide with a spinel formula, and crystals of ZnO, CuO, and at least one Group VIB metal oxide, and preferably, at least one acidic oxide of B, P, or Si, as well. The composition is useful in oxidative processes for removing sulfur from gaseous hydrocarbons.

Methods for gas phase oxidative desulphurization of hydrocarbons using CuZnAl catalysts promoted with group VIB metal oxides

A composition useful in oxidative desulphurization of gaseous hydrocarbons is described. It comprises a CuZnAl&#x2014;O mixed oxide, and an H form of a zeolite. The mixed oxide can contain one or more metal oxide promoters. The H form of the zeolite can be desilicated, and can also contain one or more transition metals.

Additives for gas phase oxidative desulfurization catalysts

A composition useful in oxidative desulfurization of gaseous hydrocarbons is described. It comprises a CuZnAl&#x2014;O mixed oxide, and an H form of a zeolite. The mixed oxide can contain one or more metal oxide promoters. The H form of the zeolite can be desilicated, and can also contain one or more transition metals.

A catalytic composition is disclosed, which exhibits an X-ray amorphous oxide, with a spinel formula and highly dispersed crystals of ZnO, CuO, and optionally CeO. The composition is useful in oxidative and adsorptive processes for removing sulfur from gaseous hydrocarbons.

Catalytic compositions useful in removal of sulfur compounds from gaseous hydrocarbons, processes for making these and uses thereof

Desulfurization of hydrocarbon feeds is achieved by flashing the feed at a target cut point temperature to obtain two fractions. A first fraction contains refractory organosulfur compounds, which boils at or above the target cut point temperature. A second fraction boiling below the target cut point temperature is substantially free of refractory sulfur-containing compounds. The second fraction is contacted with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone operating under mild conditions to reduce the quantity of organosulfur compounds to an ultra-low level. The first fraction is contacted with gaseous oxidizing agent over an oxidation catalyst having a formula CuZnAlOin a gas phase catalytic oxidation reaction zone to convert the refractory organosulfur compounds to SOand low sulfur hydrocarbons. The by-product SOis subsequently removed, producing a stream containing a reduced level of organo sulfur compounds.

Targeted desulfurization process and apparatus integrating gas phase oxidative desulfurization and hydrodesulfurization to produce diesel fuel having an ultra-low level of organosulfur compounds

Desulfurization of hydrocarbon feeds is achieved by first contacting the entire feed with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone operating under mild conditions; a flashing column downstream of the hydrodesulfurization reaction zone fractionates the effluent to obtain a first fraction which contains refractory organosulfur compounds and a second fraction that is substantially free of organosulfur compounds, since the organosulfur compounds boiling in the range of this fraction were the labile organosulfur compounds which were initially removed by mild hydrodesulfurization. The first fraction is contacted with a gaseous oxidizing agent over an oxidation catalyst having a formula CuZnAlOin a gas phase catalytic oxidation reaction zone to convert the refractory organosulfur compounds to SOand low sulfur hydrocarbons. The by-product SOis subsequently removed, producing a stream containing a reduced level of organosulfur compounds.

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Novosibirsk, Russia

Mikhail Kerzhentsev