A Catalytic Combustion-type Carbon Monoxide Gas Sensor Incorporating an Apatite-type Oxide

摘要

A novel catalytic combustion-type CO gas sensor was devised using a catalyst composed of 11 wt% Pt supported on the apatite-like Mn-doped oxide La_(9.0)Si_(5.8)Mn_(0.2)O_(27-δ). Its CO gas sensing performance was also investigated. Since the 11 wt% Pt/La_(9.0)Si_(5.8)Mn_(0.2)O_(27-δ) catalyst oxidized CO at a temperature over 60℃, the sensor also responded to CO at temperatures above 60℃, showing superior CO detection at 130℃ with high sensitivity and a rapid response time of 10-20 s.