Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HIGH SILICA-ZEOLITE TYPE CATALYST
Document Type and Number:
Japanese Patent JP3905948
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To have good coking resistance and regeneration deterioration resistance by a method in which the SiO2/Al2O3 mole ratio of zeolite, the particle size of primary particles, and the ratio of a surface melting point to the total melting point in a H-type are made specified values, after steam treatment in specified conditions, the amount of separated pyridine in the previous H-type meets an equation.
SOLUTION: The mole ratio SiO2/Al2O3 of zeolite which constitutes a zeolite catalyst is made 20-200, and the particle size of primary zeolite particles is made 0.3-3μm. The ratio of a surface melting point to the total melting point when the zeolite catalyst is an H-type is made 0.03 0.15. Moreover, the quantity B of separated pyridine at 500-900°C by a temperature increasing separation method, when the zeolite catalyst, after being treated with steam for 5hr at a partial pressure of 0.8atm and at 650°C, is the H-type and the quantity A of separated pyridine at 500-900°C by the temperature increasing separation method, when the catalyst is the H-type before steam treatment are made to meet an equation (α expresses a parameter).


Inventors:
川瀬 正嗣
野村 晃司
永守 幸人
木下 二郎
Application Number:
JP11418597A
Publication Date:
April 18, 2007
Filing Date:
April 17, 1997
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
山陽石油化学株式会社
International Classes:
B01J29/06; B01J29/40; B01J29/064; C07B61/00; C07C2/42; C07C15/02; (IPC1-7): B01J29/40; B01J29/06; B01J29/064; C07C2/42; C07C15/02; //C07B61/00
Domestic Patent References:
JP5310415A
JP3193622A
Foreign References:
WO1995009050A1
Attorney, Agent or Firm:
酒井 正己
加々美 紀雄
小松 純