Open AccessInfluence of Hydrogen on the Properties of Nickel-Molybdenum Catalysts in the Steam Reforming of Hydrocarbons
Author(s) -
B. Stasińska,
T. Borowiecki,
A. Gołębiowski,
K. Stołecki
Publication year - 1998
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749801600904
Subject(s) - catalysis , nickel , chemistry , molybdenum , steam reforming , hydrogen , inorganic chemistry , partial pressure , hydrocarbon , hydrogen production , chemical engineering , organic chemistry , oxygen , engineering
It is well known that the presence of hydrogen influences the activity of a nickel catalyst in the steam reforming of hydrocarbons. The properties of nickel–molybdenum catalysts in such reactions depend on the kind of atmosphere employed since the effects of the partial pressure of hydrogen on the coking rate of nickel or of nickel–molybdenum catalysts are different. The changes observed depend on the presence and amount of promoter, although changes in the rate of coking for promoted catalysts at increased partial pressures of hydrogen in the reaction mixture cannot be explained solely in terms of changes in their activity. When all the experimental results and literature information are taken into account, it appears that the distribution of various MoO x surface sites plays an important role in the behaviour of nickel–molybdenum catalysts.