A catalyst is provided having: (a) at least one multimetallic salt; and (b) at least one organic acid, wherein the at least one multimetallic salt to the at least one organic acid weight ratio is in the range of 1:0.01-1:0.5. A process is also provided for the preparation of the catalyst and for the preparation of the multimetallic salt.

A highly active trimetallic mixed transition metal oxide material has been developed. The material may be sulfided to generate metal sulfides which are used as a catalyst in a conversion process such as hydroprocessing. The hydroprocessing may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

A highly active trimetallic mixed transition metal oxide material has been developed. The material may be sulfided to generate metal sulfides which are used as a catalyst in a conversion process such as hydroprocessing. The hydroprocessing may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

The process for producing light olefins comprises the steps of contacting a feed stream comprising C.sub.4 to C.sub.11 hydrocarbons having at least 10 wt % paraffins and at least 15 wt % alkylaromatics with an acidic catalyst to form a cracked product comprising light olefins and aromatics. The catalyst comprises about 30 to about 80 wt-% of a crystalline zeolite and a low-acidic binder and may be regenerated.

The process for producing light olefins comprises the steps of contacting a feed stream comprising C.sub.4 to C.sub.11 hydrocarbons having at least 10 wt % paraffins and at least 15 wt % alkylaromatics with an acidic catalyst to form a cracked product comprising light olefins and aromatics. The catalyst comprises about 30 to about 80 wt-% of a crystalline zeolite and a low-acidic binder and may be regenerated.

The invention relates to systems and methods for ultrasonic oxidative desulfurization of heavy fuel oils. In various embodiments, the methods include combinations of ultrasonic sulfone decomposition processes and/or catalytic decomposition processes.

The invention relates to systems and methods for ultrasonic oxidative desulfurization of heavy fuel oils. In various embodiments, the methods include combinations of ultrasonic sulfone decomposition processes and/or catalytic decomposition processes.

A unique crystalline transition metal molybdotungstate material has been developed. The material may be sulfided to generate metal sulfides which are used as a catalyst in a conversion process such as hydroprocessing. The hydroprocessing may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

A unique crystalline transition metal molybdotungstate material has been developed. The material may be sulfided to generate metal sulfides which are used as a catalyst in a conversion process such as hydroprocessing. The hydroprocessing may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

A process for hydrodealkylating a hydrocarbon stream comprising (a) contacting the hydrocarbon stream with a hydroprocessing catalyst in a hydroprocessing reactor in the presence of hydrogen to yield a hydrocarbon product, wherein the hydrocarbon stream contains C.sub.9+ aromatic hydrocarbons; and (b) recovering a treated hydrocarbon stream from the hydrocarbon product, wherein the treated hydrocarbon stream comprises C.sub.9+ aromatic hydrocarbons, wherein an amount of C.sub.9+ aromatic hydrocarbons in the treated hydrocarbon stream is less than an amount of C.sub.9+ aromatic hydrocarbons in the hydrocarbon stream due to hydrodealkylating of at least a portion of C.sub.9+ aromatic hydrocarbons from the hydrocarbon stream during the step (a) of contacting.