Genesis Investigation of Niand Mo-Based Dispersed Catalysts of Steam Cracking of Heavy Oil

Full text (.pdf)
Issue
Химия. Chemistry. 2017 10 (4)
Authors
Sosnin, Gleb A.; Larichev, Yurii V.; Eletskii, Peter M.; Zaikina, Olesya O.; Kukushkin, Roman G.; Gerasimov, Evgenii Yu.; Yakovlev, Vadim A.
Contact information
Sosnin, Gleb A.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, , Novosibirsk, 630090, Russia; Novosibirsk State University 2 Pirogova Str., Novosibirsk, 630090, Russia; ; Larichev, Yurii V.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, , Novosibirsk, 630090, Russia; Novosibirsk State University 2 Pirogova Str., Novosibirsk, 630090, Russia; Eletskii, Peter M.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, , Novosibirsk, 630090, Russia; Zaikina, Olesya O.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, , Novosibirsk, 630090, Russia; Kukushkin, Roman G.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, , Novosibirsk, 630090, Russia; Gerasimov, Evgenii Yu.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, , Novosibirsk, 630090, Russia; Yakovlev, Vadim A.: Boreskov Institute of Catalysis SB RAS 5 Lavrentieva, , Novosibirsk, 630090, Russia
Keywords
heavy oil; reversed emulsion; dispersed catalyst; catalytic steam cracking; small angle X-ray scattering; molybdenum; nickel
Abstract

This article presents the results of the genesis investigation of Ni- and Mo-based dispersed steam cracking catalyst produced via in-situ heavy oil emulsion decomposition. The structural characteristics of catalysts and their precursors have been studied by SAXS and TEM for the first time at all stages of production and operation: in reverse emulsions, dispersions and in the coke residues obtained after catalytic steam cracking process It is shown that the Ni-based precursor is converted to larger aggregates during transition from a dispersion in heavy oil to Ni9S8 10-40 nm particles in the coke residue. In the case of molybdenum this trend was not revealed, after steam cracking process two types of particles are formed: small layered MoS2 particles with a length of 10-15 nm and larger MoO2 20-30 nm particles

Pages
489-501
Paper at repository of SibFU
http://elib.sfu-kras.ru/handle/2311/70357