Catalyst based on Ru loaded HZSM5 zeolite is prepared by a wet impregnation method, which is screen printed onto alumina substrates and serves as sensitive materials for the catalytic combustion sensor. The results show that Ru-HZSM5 catalyst has a high catalytic activity to combustible gases such as hydrogen (H₂) and carbon monoxide (CO) at low temperature. However, a poor dispersion of Ru reduces the catalytic activity of the catalyst when the Ru loading is too high. It is due to the pore structure of the sensitive material which facilitates the acquisition of high dispersion characteristics and gas selective regulation. The catalytic sensor based on Ru-HZSM5 also has high selectivity for combustible gases. Due to the low operating temperature, the sensor has a high selectivity for combustible gases and no cross-response to interfering gases such as ammonia (NH₃) and volatile organic compound (VOCs). Therefore, the catalytic type gas sensor with low power consumption and good selectivity can be used for monitoring CO, H₂ and other combustible gases.

基于载钌 HZSM5 沸石的催化剂通过湿浸渍法制备，该催化剂丝网印刷到氧化铝基材上，用作催化燃烧传感器的敏感材料。结果表明，Ru-HZSM5催化剂对氢气（H ₂) 和一氧化碳 (CO) 在低温下。然而，当 Ru 负载量过高时，Ru 的分散性差会降低催化剂的催化活性。这是由于敏感材料的孔隙结构有助于获得高分散特性和气体选择性调节。基于Ru-HZSM5的催化传感器对可燃气体也具有高选择性。由于工作温度低，该传感器对可燃气体具有高选择性，并且对干扰气体如氨 (NH ₃ ) 和挥发性有机化合物 (VOC)没有交叉响应。因此，催化式气体传感器功耗低、选择性好，可用于监测CO、H ₂等可燃气体。