Journal
PLASMA PROCESSES AND POLYMERS
Volume 20, Issue 6, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.202200236
Keywords
air plasma; dielectric barrier discharge; plasma catalysis; VOCs removal
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High-silica zeolite adsorbents (ZAs) are used for plasma catalytic removal of toluene in cycled storage-discharge mode. At 5 min discharge time, toluene conversion reaches 100% with 22% CO and 26% CO2 selectivities. After 20 min discharge time, the selectivities to CO and CO2 become approximately 30% and 60% respectively. A tandem effect of in-plasma ZA and postplasma Au catalysts achieves nearly 100% CO2 selectivity for complete oxidation of toluene to CO2, with investigations on the dependence of the tandem effect on Au loading and space velocity ratio of ZA to Au catalyst.
High-silica zeolite adsorbents (ZAs) are employed for plasma catalytic removal of toluene with cycled storage-discharge mode in this work. At 5 min discharge time of the discharge stage in air plasma (20% O-2 in N-2), toluene conversion attains 100%, obtaining 22% CO and 26% CO2 selectivities. After 20 min discharge time, the air plasma gives the selectivities to CO of similar to 30% and CO2 of similar to 60%. For complete oxidation of toluene to CO2, ZA and Au catalysts are combined and a tandem effect of in-plasma ZA and postplasma Au catalysts is achieved, featuring nearly 100% CO2 selectivity at 100% toluene conversion. Dependences of the tandem effect on Au loading and space velocity ratio of ZA to Au catalyst are investigated.
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