Selective Low-Temperature Hydrogen Catalytic Sensor
Ivan Ivanov, Alexander Baranov, Sergey Mironov, Saba Akbari
Abstract
The research demonstrates for the first time the high selectivity of catalytic hydrogen sensors to other hydrocarbons (methane, propane, hexane, butane, ethane, and ethylene) at a temperature less than 70 °С. Two circuits were used to measure the response of the sensors: a Wheatstone bridge circuit and a divider circuit. Hydrogen measurement was conducted within a temperature range of 66–130 °С. The sensors exhibited high sensitivity (25–35 mV/%) and low power consumption (approximately 8.6 mW). The Wheatstone bridge circuit was observed to have the maximum value of selectivity and sensitivity.
Topics & Concepts
Wheatstone bridgePropaneSelectivityHydrogenMaterials scienceCatalysisHexaneButaneMethaneAnalytical Chemistry (journal)EthyleneAtmospheric temperature rangeChemistryElectrical engineeringOrganic chemistryPhysicsEngineeringVoltageMeteorologyResistorGas Sensing Nanomaterials and SensorsSpectroscopy and Laser ApplicationsAdvanced Chemical Sensor Technologies