Metal Al produced by H2 plasma reduction of AlCl3: a thermodynamic and kinetic study on the plasma chemistry.
In this paper we reported that low temperature plasma may reverse the direction of a chemical reaction. The thermodynamically forbidden reaction between H 2 and AlCl 3 was able to take place with the assistance of low temperature plasma, yielding metal Al. The plasma chemistry of the reaction was investigated by optical emission spectroscopy, which suggested that the dissociation of H 2 and AlCl 3 molecules by plasma led the reaction to a thermodynamically favorable one by creating reaction channels with low Gibbs free energy change. The addition of Ar promoted the reaction kinetics dramatically, which was attributed to the enhanced dissociation of AlCl 3 molecules by excited Ar species.
Zheng
Jie
J
Beijing National Laboratory for Molecular Sciences (BNLMS) (The State Key Laboratory of Rare Earth Materials Chemistry and Applications), College of Chemistry and Molecular Engineering, Peking University, Beijing, P.R. China.
Sun
Bo
B
Yang
Rong
R
Song
Xubo
X
Li
Xingguo
X
Pu
Yikang
Y