TY - JOUR
T1 - Catalytic conversion of 1,1,1,2-tetrafluoroethane (HFC-134a)
AU - Han, Tae Uk
AU - Yoo, Beom Sik
AU - Kim, Young Min
AU - Hwang, Byeong Ah
AU - Sudibya, Gamal Luckman
AU - Park, Young Kwon
AU - Kim, Seungdo
N1 - Publisher Copyright:
© 2018, Korean Institute of Chemical Engineers, Seoul, Korea.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - We examined the conversion of HFC-134a over five catalysts, Na2CO3, CaO, CaCO3, and two types of γ-Al2O3 with different surface areas, between 300 and 600 °C. HFC-134a was barely converted via the non-catalytic reaction, even at the highest temperature (600 °C). The operating temperatures for the catalytic conversion of HFC-134a were reduced dramatically and its efficiency increased with increasing temperature. Among the catalysts used, γ-Al2O3 with the larger surface area showed the highest conversion rate of HFC-134a, which was followed, in order, by γ-Al2O3 with the smaller surface area, CaCO3, CaO, and Na2CO3. The conversion rate of γ-Al2O3 decreased rapidly due to catalyst deactivation. The catalytic efficiency of γ-Al2O3 was maintained for a longer period by water addition. Water acted as a hydrogen donor for the dehydrofluorination reaction.
AB - We examined the conversion of HFC-134a over five catalysts, Na2CO3, CaO, CaCO3, and two types of γ-Al2O3 with different surface areas, between 300 and 600 °C. HFC-134a was barely converted via the non-catalytic reaction, even at the highest temperature (600 °C). The operating temperatures for the catalytic conversion of HFC-134a were reduced dramatically and its efficiency increased with increasing temperature. Among the catalysts used, γ-Al2O3 with the larger surface area showed the highest conversion rate of HFC-134a, which was followed, in order, by γ-Al2O3 with the smaller surface area, CaCO3, CaO, and Na2CO3. The conversion rate of γ-Al2O3 decreased rapidly due to catalyst deactivation. The catalytic efficiency of γ-Al2O3 was maintained for a longer period by water addition. Water acted as a hydrogen donor for the dehydrofluorination reaction.
KW - Catalytic Conversion
KW - HFC-134a
KW - Hydrolysis
KW - Reaction Pathways
KW - γ-AlO
UR - http://www.scopus.com/inward/record.url?scp=85048827945&partnerID=8YFLogxK
U2 - 10.1007/s11814-018-0051-7
DO - 10.1007/s11814-018-0051-7
M3 - Article
AN - SCOPUS:85048827945
SN - 0256-1115
VL - 35
SP - 1611
EP - 1619
JO - Korean Journal of Chemical Engineering
JF - Korean Journal of Chemical Engineering
IS - 8
ER -