E.i. Dupont De Nemours and Company

Pratibha Laxman Gai

Narayanan Sankara Subramanian

Russell Bertrum Diemer, Jr

Mark B Shiflett

Steven Raymond Lustig

Subramaniam Sabesan

Kostantinos Kourtakis

Alvin Allen

John Steven Gergely

Russell Bertrum Diemer

This invention relates to adsorbents useful for storing hydrogen and other small molecules, and to methods for preparing such adsorbents. The adsorbents are produced by heating carbonaceous materials to a temperature of at least 900&#xb0; C. in an atmosphere of hydrogen.

Storage materials for hydrogen and other small molecules

The present disclosure relates to a process for making treated inorganic particles by vapor phase deposition of surface treatments on the particle surface by reacting inorganic particles, typically titanium dioxide particles, with a composition comprising a sinterable material and a liquid medium at a temperature sufficient to evaporate the medium and release the sinterable material as aerosol particles. The aerosol particles sinter and form a treatment on the surfaces of the inorganic particles.

Process for treating inorganic particles via sintering of sinterable material

The disclosed invention relates to novel crystalline compositions which may be obtained by doping the alpha (&#x3b1;) form of AlPOceramics, which find use as piezoelectric materials, stable supports for catalysts, biotechnology uses, and the like.

Crystalline compositions of doped aluminum phosphate

The present invention relates to a process for making durable titanium dioxide pigment by vapor phase deposition of surface treatments on the titanium dioxide particle surface by reacting titanium tetrachloride vapor, an oxygen containing gas and aluminum chloride in a plug flow reactor to form a product stream containing titanium dioxide particles; and introducing silicon tetrachloride into the reactor at a point down stream of the point where the titanium tetrachloride and oxygen were contacted and where at least 97% of the titanium tetrachloride has been converted to titanium dioxide or where the reaction temperature is no greater than about 1200&#xb0; C., and preferably not more than about 1100&#xb0; C.

Process for making durable rutile titanium dioxide pigment by vapor phase deposition of surface treatment

The present invention concerns a method for enhancing the activity of vanadium phosphorus oxide (VPO) catalysts. Promoter reagents are grafted onto or reacted with the catalyst surface. An optional calcination and activation heating cycle transforms the catalyst precursor into a final active phase. A preferred VPO catalyst produced has a ratio of molybdenum to vanadium on the surface of the catalyst to molybdenum to vanadium in the overall bulk of the catalyst represented by the equation (Mo/V) Surface&#x2267;1.10 (Mo/V) overall bulk.

Vanadium-phosphorus oxide catalysts with promoter reagents

Process for making durable rutile titanium dioxide pigment by vapor phase deposition of surface treatments

The disclosed invention relates to novel crystalline compositions which may be obtained by doping the alpha (&agr;) form of AlPO ceramics, which find use as piezoelectric materials, stable supports for catalysts, biotechnology uses, and the like.

The present invention provides a process for producing titanium dioxide (TiO.sub.2) pigment having a coating comprising silica and a second oxide selected from the group consisting of oxides of boron, phosphorus, magnesium, niobium, germanium, and mixtures thereof, comprising the steps of (a) reacting titanium tetrachloride (TiCl.sub.4) in the vapor phase with an aluminum compound and an oxygen-containing gas in a reactor at a temperature in the range of about 900.degree. C. to about 1600.degree. C. to provide a gaseous suspension comprising TiO.sub.2 particles, (b) contacting the gaseous suspension comprising the TiO.sub.2 particles with a silicon halide and an oxide precursor of boron, phosphorus, magnesium, niobium, germanium, and mixtures thereof, and (c) cooling the gaseous suspension to produce TiO.sub.2 pigment having a coating comprising silica and a second oxide.

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Wilmington, DE, United States of America

Pratibha Laxman Gai