TY - JOUR
T1 - Separation of diethylbenzene isomers on silicalite in the presence of high pressure carbon dioxide and propane
AU - Tan, Chung Sang
AU - Liao, Chen Lung
AU - Chiang, Shiaw Tseh
PY - 1991
Y1 - 1991
N2 - An experimental study of the separation of m- and p-diethylbenzene (DEB) from a mixture containing the weight composition 66.7% m-DEB and 33.3% p-DEB on silicalite has been undertaken using high-pressure carbon dioxide and propane. The high-pressure gases functioned both as a carrier and a desorbent. The results show that the most appropriate operating combinations for obtaining 100% recovery of DEB isomer with a purity of over 99% and the smallest mean retention time for m-DEB was achieved by utilizing CO2 and propane at 34.0 atm, 363 K and 30 cm3/min, and at 6.8 atm, 443 K and 15 cm3/min, respectively. With these various combinations, the mean retention time of m-DEB was 149.7 min and 84.4 min using CO2 and propane, respectively. Accommodation to the operating temperature in the DEB production plant, and taking account of the compression costs and the operation time required, suggests the use of propane to achieve separation.
AB - An experimental study of the separation of m- and p-diethylbenzene (DEB) from a mixture containing the weight composition 66.7% m-DEB and 33.3% p-DEB on silicalite has been undertaken using high-pressure carbon dioxide and propane. The high-pressure gases functioned both as a carrier and a desorbent. The results show that the most appropriate operating combinations for obtaining 100% recovery of DEB isomer with a purity of over 99% and the smallest mean retention time for m-DEB was achieved by utilizing CO2 and propane at 34.0 atm, 363 K and 30 cm3/min, and at 6.8 atm, 443 K and 15 cm3/min, respectively. With these various combinations, the mean retention time of m-DEB was 149.7 min and 84.4 min using CO2 and propane, respectively. Accommodation to the operating temperature in the DEB production plant, and taking account of the compression costs and the operation time required, suggests the use of propane to achieve separation.
UR - http://www.scopus.com/inward/record.url?scp=0026263171&partnerID=8YFLogxK
U2 - 10.1177/026361749100800405
DO - 10.1177/026361749100800405
M3 - 期刊論文
AN - SCOPUS:0026263171
SN - 0263-6174
VL - 8
SP - 226
EP - 234
JO - Adsorption Science and Technology
JF - Adsorption Science and Technology
IS - 4
ER -