FLUID CATALYST

PROBLEM TO BE SOLVED: To lessen the adhering property without deteriorating the active performance as a catalyst and the wear resistance by adding an inorganic fine particle with low friction coefficient and excellent lubricating property to a fluid catalyst. SOLUTION: This fluid catalyst contains an inorganic fine particle having a lubricating property. The inorganic fine particle having a lubricating property (thereafter called as lubricating inorganic particle) to be used may be the one which has a low friction coefficient and excellent lubricating property, is practically unchanged in catalyst producing conditions and use conditions, and does not lose friction decreasing function and various kinds of inorganic substances may be used without any specific restriction. As the lubricating inorganic particle, talc, hexagonal boron nitride, graphite, etc., are used. Either one lubricating inorganic particle (0.1 wt.%) or two or more particles in combination with one another may be used. Moreover, the particle size of the particle is not specifically limited and properly selected in relation to the particle size of the fluid catalyst itself, and normally, the particle size is 10 μm or smaller.