TY - JOUR
T1 - One-step synthesis, characterization and oxidative desulfurization of 12-tungstophosphoric heteropolyanions immobilized on amino functionalized SBA-15
AU - Pham, Xuan Nui
AU - Tran, Dinh Linh
AU - Pham, Tuan Dat
AU - Nguyen, Quang Man
AU - Thi, Van Thi Tran
AU - Van, Huan Doan
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Keggin-type 12-tungstophosphoric [PW12O40]3− heteropolyanions were successfully immobilized onto mesoporous material surface of SBA-15 functionalized using the (3-aminopropyl)triethoxysilane (APTES) synthesized by one-pot co-condensation method, also called one-step synthesis. The synthesized PW−-NH3 +-SBA-15 catalyst was characterized by XRD, N2 adsorption–desorption, FT-IR, TGA, SEM, TEM, EDS, XPS methods. The results indicated that ordered hexagonal mesostructure for SBA-15 support was still maintained after being functionalized with amine groups, while the specific surface area of SBA-15 was decreased. The active species of phosphotungstic acid H3PW12O40 (HPW) retained its Keggin structure of the heteropolyanions on the amine-modified SBA-15. The PW−–+H3N–SBA–15 catalyst exhibited a high catalytic activity for oxidative desulfurization process of sulfur-containing model fuel. The dibenzothiophene (DBT) conversion of almost 100% was achieved with reaction conditions of 40 mg of catalyst dosage, 2 mL of hydrogen peroxide, 90 °C of reaction temperature, and 120 min of reaction time.
AB - Keggin-type 12-tungstophosphoric [PW12O40]3− heteropolyanions were successfully immobilized onto mesoporous material surface of SBA-15 functionalized using the (3-aminopropyl)triethoxysilane (APTES) synthesized by one-pot co-condensation method, also called one-step synthesis. The synthesized PW−-NH3 +-SBA-15 catalyst was characterized by XRD, N2 adsorption–desorption, FT-IR, TGA, SEM, TEM, EDS, XPS methods. The results indicated that ordered hexagonal mesostructure for SBA-15 support was still maintained after being functionalized with amine groups, while the specific surface area of SBA-15 was decreased. The active species of phosphotungstic acid H3PW12O40 (HPW) retained its Keggin structure of the heteropolyanions on the amine-modified SBA-15. The PW−–+H3N–SBA–15 catalyst exhibited a high catalytic activity for oxidative desulfurization process of sulfur-containing model fuel. The dibenzothiophene (DBT) conversion of almost 100% was achieved with reaction conditions of 40 mg of catalyst dosage, 2 mL of hydrogen peroxide, 90 °C of reaction temperature, and 120 min of reaction time.
KW - Dibenzothiophene
KW - Functional mesoporous materials
KW - Heteropoly acid
KW - One-pot synthesis
KW - Oxidative desulfurization
UR - http://www.scopus.com/inward/record.url?scp=85033601964&partnerID=8YFLogxK
U2 - 10.1016/j.apt.2017.10.011
DO - 10.1016/j.apt.2017.10.011
M3 - Article (Academic Journal)
AN - SCOPUS:85033601964
SN - 0921-8831
VL - 29
SP - 58
EP - 65
JO - Advanced Powder Technology
JF - Advanced Powder Technology
IS - 1
ER -