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The promotion of Argon and water molecule on direct synthesis of H 2 O 2 from H 2 and O 2
Author(s) -
Yi Yanhui,
Wang Li,
Yu Juan,
Guo Hongchen,
Zhang Jialiang,
Meng Changgong
Publication year - 2018
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.15999
Subject(s) - dissociation (chemistry) , catalysis , chemistry , yield (engineering) , molecule , argon , hydrogen peroxide , medicinal chemistry , analytical chemistry (journal) , materials science , organic chemistry , metallurgy
Direct synthesis of hydrogen peroxide (H 2 O 2 ) from H 2 and O 2 is an ideal route. H 2 /O 2 plasma has a great potential for direct synthesis of high purity H 2 O 2 without purification operations. However, low yield and high energy consumption limits the application of H 2 /O 2 plasma in industry. This article reports that gas state Ar and H 2 O molecule serving as molecular catalysts promoted the synthesis of H 2 O 2 from H 2 /O 2 /Ar/H 2 O plasma dramatically: the H 2 O 2 yield was enhanced by 244% and the energy consumption was reduced by 70.9%. Ar not only increased the electron density, but also selectively accelerated the dissociation of H 2 toward the formation of •HO 2 , a key intermediate species in H 2 O 2 synthesis. While H 2 O facilitated the formation of •HO 2 radical and stabilized it by forming a HO 2 •H 2 O complex, resulting in enhancing the H 2 O 2 production. This single molecular catalysis reduced the cost of H 2 O 2 synthesis more than 50%. © 2017 American Institute of Chemical Engineers AIChE J , 64: 981–992, 2018