B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/15, 260/675.
B01J 29/06 (2006.01) C07C 2/12 (2006.01) C07C 2/86 (2006.01) C07C 6/12 (2006.01) C07C 15/08 (2006.01)
Patent
CA 1217469
ABSTRACT OF THE DISCLOSURE: The invention relates to a crystalline alumino- silicate, characterized by the fact that it has (1) a ratio of the silicon/alumunium atomic ratio of the external surface of the crystal to the average value of the silicon/aluminium atomic ratio in whole crystal equals to about 1 or more;(2) a chemical composition expressed in terms of oxyde molar ratios of: 0.8 ? 1.6 M2/no-A1203 - 10 ? 100 SiO2 0 ? 40 H20, wherein " M" represents a cation and " n" represents the valence of M; and (3) a true monoclinic symmetry and a specific powder X-ray diffraction pattern. The invention also relates to a process for preparing the above mentioned crystal. This crystal shows good reaction selectivities in conversions of hydrocarbons when it is used as catalyst.
447080
Hashimoto Takao
Maeshima Tsugio
Miura Tadashi
Sakurada Satoshi
Tagaya Nobuaki
Robic Robic & Associes/associates
Toa Nenryo Kogyo K.k.
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