TY - JOUR
T1 - Preparing high ratio of trans/trans 2,2-bis(4-hydroxycyclohexyl)propane isomer by one-dimensional nickel-palladium catalyst
AU - Su, Ying Chou
AU - Wang, Cheng Chien
AU - Chen, Chuh Yung
N1 - Funding Information:
Financial support was from the Ministry of Science and Technology of the Republic of China (MOST 108-2823-8-006-003 -) is gratefully acknowledged. We thank Pi-Yin Lin, 600NMR of NCKU for assistance with NMR analysis.
Publisher Copyright:
© 2021 Taiwan Institute of Chemical Engineers
PY - 2021/12
Y1 - 2021/12
N2 - Background: 4,4′-isopropylidenediphenol (BPA) hydrogenated to 2,2-bis(4-hydroxycyclohexyl) propane (HBPA) is a simple way to reduce its toxicity and environmental impact. In addition, the higher trans/trans HBPA moiety in polymer will has better mechanical properties. Therefore, how to prepare trans/trans HBPA via hydrogenation is an important issue. Method: One-dimensional nickel-palladium catalyst was successfully synthesized via reduction by an external magnetic field. The high ratio of trans/trans HBPA was characterized by FTIR, GC/MS, and NMR, respectively. The adsorption behavior of BPA and its half-hydrogenated intermediates was studied by Material Studio software. Significant findings: The pd nanoparticles immobilized on the magnetization of 1-D Ni catalyst with high amount of Ni(111) plane is the novelty of this research. The conversion of BPA was high to 100% and the ratio of trans/trans HBPA was over than 75% at 180 °C and 70 kgf/cm2 in isopropanol medium. The trans/trans ratio of HBPA was slightly increasing as increasing hydrogen pressure and decreasing reaction temperature. Reaction intermediate was selected with the aid of molecular simulation. Moreover, the reaction path of BPA hydrogenated by one-dimensional nickel-palladium catalyst was proposed that BPA was firstly hydrogenated to tetrahydro intermediate and followed roll-over mechanism to obtain trans/trans HBPA product.
AB - Background: 4,4′-isopropylidenediphenol (BPA) hydrogenated to 2,2-bis(4-hydroxycyclohexyl) propane (HBPA) is a simple way to reduce its toxicity and environmental impact. In addition, the higher trans/trans HBPA moiety in polymer will has better mechanical properties. Therefore, how to prepare trans/trans HBPA via hydrogenation is an important issue. Method: One-dimensional nickel-palladium catalyst was successfully synthesized via reduction by an external magnetic field. The high ratio of trans/trans HBPA was characterized by FTIR, GC/MS, and NMR, respectively. The adsorption behavior of BPA and its half-hydrogenated intermediates was studied by Material Studio software. Significant findings: The pd nanoparticles immobilized on the magnetization of 1-D Ni catalyst with high amount of Ni(111) plane is the novelty of this research. The conversion of BPA was high to 100% and the ratio of trans/trans HBPA was over than 75% at 180 °C and 70 kgf/cm2 in isopropanol medium. The trans/trans ratio of HBPA was slightly increasing as increasing hydrogen pressure and decreasing reaction temperature. Reaction intermediate was selected with the aid of molecular simulation. Moreover, the reaction path of BPA hydrogenated by one-dimensional nickel-palladium catalyst was proposed that BPA was firstly hydrogenated to tetrahydro intermediate and followed roll-over mechanism to obtain trans/trans HBPA product.
UR - https://www.scopus.com/pages/publications/85117116177
UR - https://www.scopus.com/pages/publications/85117116177#tab=citedBy
U2 - 10.1016/j.jtice.2021.09.029
DO - 10.1016/j.jtice.2021.09.029
M3 - Article
AN - SCOPUS:85117116177
SN - 1876-1070
VL - 129
SP - 15
EP - 25
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
ER -