摘要
Supported Pd catalyst is an important noble metal material in recent years due to its high catalytic performance in CO_(2)hydrogenation.A fluidized-bed plasma assisted atomic layer deposition(FP-ALD) process is reported to fabricate Pd nanoparticle catalyst over γ-Al_(2)O_(3)or Fe_(2)O_(3)/γ-Al_(2)O_(3)support,using palladium hexafluoroacetylacetonate as the Pd precursor and H_(2)plasma as counter-reactant.Scanning transmission electron microscopy exhibits that highdensity Pd nanoparticles are uniformly dispersed over Fe_(2)O_(3)/γ-Al_(2)O_(3)support with an average diameter of 4.4 nm.The deposited Pd-Fe_(2)O_(3)/γ-Al_(2)O_(3)shows excellent catalytic performance for CO_(2)hydrogenation in a dielectric barrier discharge reactor.Under a typical condition of H_(2)to CO_(2)ratio of 4 in the feed gas,the discharge power of 19.6 W,and gas hourly space velocity of10000 h^(-1),the conversion of CO_(2)is as high as 16.3% with CH_(3)OH and CH4selectivities of 26.5%and 3.9%,respectively.
作者
唐守贤
田地
李筝
王正铎
刘博文
程久珊
刘忠伟
Shouxian TANG;Di TIAN;Zheng LI;Zhengduo WANG;Bowen LIU;Jiushan CHENG;Zhongwei LIU(Laboratory of Plasma Physics and Materials,Beijing Institute of Graphic Communication,Beijing 102600,People’s Republic of China)
基金
financially supported by National Natural Science Foundation of China (Nos. 12075032 and 12105021)
Beijing Municipal Natural Science Foundation (Nos.8222055 and 2232061)
Yunnan Police College Project (No. YJKF002)
Beijing Institute of Graphic Communication Project (No. Ec202207)。