Affiliation: | a Institute of Advanced Material Study, Kyushu University, Kasugakouen 6-1, Kasuga-shi, Fukuoka 816-8580, Japan b Mitsubishi Heavy Industries Ltd., Technical Headquarters Nagasaki, Research and Development Center Chemical Research Laboratory 5-717-1, Fukahori-machi, Nagasaki 851-0301, Japan c Research and Development Center, Osaka Gas Company Co., Ltd., 6-19-9, Torishima, Konohana-ku, Osaka 554-0051, Japan |