Patent ID: 11865499
Assignee: NGK INSULATORS, LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 1:
2. A zeolite membrane complex, comprising:
a support which is a longitudinal member having a length of 50 cm or more and has at least one through hole extending in a longitudinal direction; and
a zeolite membrane provided over an inner peripheral surface of said at least one through hole in said support or over an outer peripheral surface of said support, from one end portion of said support in said longitudinal direction to the other end portion thereof,
wherein among constituent elements of said zeolite membrane except oxygen, an element with the highest percentage is assumed as a main element, and in a case where the concentration of said main element of said zeolite membrane is measured at a plurality of measurement points including respective points on three portions defined by dividing said support into three equal parts in said longitudinal direction, among concentrations of said main element at said plurality of measurement points, a concentration having the maximum absolute value of a difference from an average value of all the concentrations is specified, and an overall evaluation value obtained by dividing the absolute value of the difference of said concentration from said average value by said average value is 3% or more and 15% or less.