A process for preparing a catalyst material, includes: (a) providing a support material having surface hydroxyl (OH) groups, the support material is ceria (CeO.sub.2), zirconia (ZrO.sub.2) or a combination, and the support material contains between 0.3 and 2.0 mmol OH groups/g of the support material; (b) reacting the support material with at least one of: (b1) a compound containing at least one alkoxy or phenoxy group bound though its oxygen atom to a metal element from Group 5 (V, Nb, Ta) or Group 6 (Cr, Mo, W); (b2) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element from Group 5 or 6; (b3) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element which is copper (Cu); and (c) calcining the product obtained in step (b).

The present disclosure provides compounds, compositions, and methods for preparing alkenyl halides and/or haloalkyl-substituted olefins with Z-selectivity. The methods are particularly useful for preparing alkenyl fluorides such as CF.sub.3-substituted olefins by means of cross-metathesis reactions using halogen-containing molybdenum and tungsten complexes.

This present invention relates to oil-soluble metal compositions of metals and a method for its preparation. The composition finds application in catalysis as catalysts precursors or additives for in situ generation of nano dispersed metal/metal sulfide clusters for heavy oil hydroconversion and in the area of lubrication as friction modifiers.

A method for producing at least one olefin compound selected from the group consisting of a compound of formula (51) and a compound of formula (52), the method including reacting an olefin compound of formula (21) with a olefin compound of formula (31) in the presence of at least one metal catalyst selected from the group consisting of a compound of formula (11), a compound of formula (12), a compound of formula (13), a compound of formula (14), and a compound of formula (15). ##STR00001##

A method is provided of forming an olefin from a first olefin and a second olefin in a metathesis reaction, comprising reacting the first olefin with the second olefin in the presence of a compound that catalyzes the metathesis reaction such that the molar ratio of the compound to the first or the second olefin is from 1:500 or less, and the conversion of the first or the second olefin to the olefin is at least 30%.

Oligomers of certain glyceride compounds are generally disclosed herein. In some embodiments, the glyceride compounds include natural oil glycerides, such as glycerides derived from natural oils, such as palm oil, soybean oil, canola oil, and the like. Compositions containing such glyceride oligomers are also disclosed herein. Processes for making such glyceride oligomers are also disclosed herein. In some embodiments, the processes for making such compounds include reacting a plurality of unsaturated glyceride compounds in the presence of a metathesis catalyst.

Disclosed is a catalyst and process for producing ammonia (NH.sub.3). The process includes contacting a gaseous feed mixture comprising nitrogen (N.sub.2) and hydrogen (H.sub.2) with a metal hydride material under reaction conditions sufficient to produce a product stream comprising NH.sub.3.

A hydroprocessing catalyst has been developed. The catalyst is a unique crystalline transition metal oxy-hydroxide molybdate material. The hydroprocessing using the crystalline ammonia transition metal oxy-hydroxide molybdate material may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

A method of selectively reacting lignin or a lignin-derived reactant to yield an aromatic product. The method includes the step of reacting lignin or a lignin-derived reactant with a molybdenum-containing catalyst, in a solvent, and optionally in the presence of an oxidant, for a time and a temperature wherein at least a portion of the lignin or lignin-derived reactant is selectively converted into an aromatic product, preferably coniferaldehyde and/or sinapaldehyde.

The disclosure provides Group 6 complexes, which, in some embodiments, are useful for catalyzing olefin metathesis reactions. In some embodiments, the compounds are compounds of the following formula:

##STR00001##

wherein: M is a Group 6 metal atom; X is an oxygen atom, NR.sup.5, NN(R.sup.5)(R.sup.5) or NOR.sup.5, R.sup.5 and R.sup.5 independently being various substituents, such as aryl or heteroaryl, each optionally substituted; n is 0 or 1; R.sup.z is a neutral ligand; R.sup.1 is hydrogen or an organic substituent; R.sup.2 is an aryl or heteroaryl group, each optionally substituted; R.sup.3 is an anionic ligand; and R.sup.4 is an anionic ligand, such as a pyrrolide, a pyrazolide, an imidazolide, an indolide, an azaindolide, or an indazolide, each optionally substituted.