Council of Scientific and Industrial Research

Machiraju Subrahmanyam

Alla Venkata Rao

Panja Kanta Rao

Akula Venugopal

Vattikonda Venkata Rao

Kamaraju Seetha Rao

Muthukonda Venkatakrish Nan Shankar

Bethanabhatla Syama Sundar

Kalevaru Venkata Narayana

Basavaraju Srinivas

Murikinati Mamatha Kumari

Valluri Durga Kumari

Gullapelli Sadanandam

Dharani Praveen Kumar

Kalavaru Venkata Narayana

The present investigation is development of the TiOnanotubes concept of preparation of and their composite with fine dispersion of copper. The inventions also relates to identify a method for optimum amount of photocatalyst required for efficient and maximum hydrogen production reported than earlier (H=99,823 &#x3bc;mol&#xb7;h&#xb7;gcatalyst) from glycerol-water mixtures under solar light irradiation. A method is disclosed to produce CuO/TiOnanotubes with high sustainability and recyclable activity for hydrogen production.

CuO&#x2014;TiO2 nanocomposite photocatalyst for hydrogen production, process for the preparation thereof

This invention relates to a process for the preparation of highly active and selective ammoxidation catalyst of formula (VO).sub.2 P.sub.2 O.sub.7, TiO.sub.2 or (VO).sub.2 P.sub.2 O.sub.7, Al.sub.2 O.sub.3, which process comprises refluxing a vanadium source in the presence of alcohols; adding a source of phosphorous to form vanadyl pyrophosphate hydrate (VO).sub.2 H.sub.4 P.sub.2 O.sub.9 or (VO).sub.2 P.sub.2 O.sub.7.2H.sub.2 O; Physical mixing of (VO).sub.2 H.sub.4 P.sub.2 O.sub.9 with oxides selected from titania or alumina, and heating the resultant mixture in the presence of air at a temperature in the range of 300-600.degree. C. for a period in the range of 1 to 10 hours; and the use of said ammoxidation catalyst in the preparation of heteroaromatic nitrites.

Process for the preparation of a highly active and selective

This invention relates to a process for the preparation of highly active and selective ammoxidation catalyst of formula (VO).sub.2 P.sub.2 O.sub.7 ,TiO.sub.2 or (VO).sub.2 P.sub.2 O.sub.7, Al.sub.2 O.sub.3, which process comprises refluxing a vanadium source in the presence of alcohols; adding a source of phosphorous to form vanadyl pyrophosphate hydrate (VO).sub.2 H.sub.4 P.sub.2 O.sub.9 or (VO).sub.2 P.sub.2 O.sub.7.2H.sub.2 O ; Physical mixing of (VO).sub.2 H.sub.4 P.sub.2 O.sub.9 with oxides selected from titania or alumina, and heating the resultant mixture in the presence of air at a temperature in the range of 300-600.degree.C. for a period in the range of 1 to 10 hours; and the use of said ammoxidation catalyst in the preparation of heteroaromatic nitrites.

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Hyderabad Telangana, India

Machiraju Subrahmanyam