Hindustan Petroleum Corporation Limited

Lavanya Meesala

Pramod Kumar

Sri Ganesh Gandham

Ramachandra Rao Bojja

The present disclosure relates to a catalyst composition comprising: (a) nickel; (b) at least one promoter selected from Cu Zn, Mo, Co, Mg, Ce, Ti, Zr, Fe, Pd, Ag, Pt, or combinations thereof; and (c) a support material, wherein, the nickel loading is in the range of 6-19 wt % and the at least one promoter loading is in the range of 0.2-5 wt % with respect to the support material. The present disclosure further discloses a process for preparing a catalyst composition and a process each for the production of hydrogen gas and carbon nanotubes. Also disclosed herein, is use of a catalyst composition for obtaining hydrogen gas and carbon nanotubes.

Catalyst composition for the production of hydrogen

The present disclosure discloses a catalyst composition comprising: (a) at least one steamed biochar; and (b) at least one tri-metallic catalyst, comprising metals selected from the group consisting of nickel, copper, zinc, and combinations thereof, wherein nickel loading is in the range of 20-60 wt %, the copper loading is in the range of 0.5-5.0 wt %, and the zinc loading is in the range of 0.5-5.0 wt with respect to the at least one steamed biochar. The instant disclosure further relates to a process of preparation of the catalyst composition and a process for production of hydrogen gas and carbon nanotubes.

Catalyst composition and its applications thereof

The present subject matter relates to co-producing H-CNG and CNTs. The process comprises adding catalyst to a first reactor () and activating the catalyst and performing a reaction to obtain H-CNG and CNTs. At a first predetermined time after reaction has progressed in the first reactor (), catalyst is added to a second reactor (), activated, and then the reaction proceeds simultaneously in the first reactor () and second reactor (). The use of multiple reactors with staggered start times helps in the continuous co-production of H-CNG and CNTs. Catalyst preparation process is integrated with the co-production process for efficient heat recovery. The first and second reactors are fluidized bed reactors with cantilever trays having weirs for controlling the residence time of the catalyst in the reactor and thereby controlling the purity of CNTs produced.

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Bengaluru, India

Lavanya Meesala