Silico-alumino phosphate, honeycomb structural body and exhaust gas conversion apparatus

Abstract

A silico-alumino phosphate includes Si, Al, and P. A ratio of an amount of substance of Si to a sum of an amount of substance of Al and an amount of substance of P is approximately 0.22 or more and approximately 0.33 or less. An acid point is approximately 1.2 mmol/g or more. A honeycomb structural body includes a honeycomb unit. The honeycomb unit includes the silico-alumino phosphate and an inorganic binder. The honeycomb unit has a plurality of through-holes divided by a plurality of partition walls and arranged in a longitudinal direction of the honeycomb unit. An exhaust gas conversion apparatus includes the honeycomb structural body, a holding sealing member and a metal pipe. The holding sealing member is provided at an outer peripheral portion of the honeycomb structural body. The honeycomb structural body and the holding sealing member are installed in the metal pipe.

Dependencies are inferred from the claim text.