TY - JOUR
T1 - Transition metal chalcogenide bifunctional catalysts for chemical recycling by plastic hydrocracking: a singlesource precursor approach
AU - Tedstone, Aleksander
AU - Bin Jumah, Abdulrahman
AU - Asuquo, Edidiong
AU - Garforth, Arthur
N1 - Funding Information:
UK Catalysis Hub is kindly thanked for resources and support for Dr Tedstone via our membership of the UK Catalysis Hub Consortium and funding through EPSRC grant no. EP/R027129/1. The authors would also like to acknowledge the support of King Saud University in Riyadh (KSU) for research funding. Acknowledgements
Publisher Copyright:
© 2022 Royal Society Publishing. All rights reserved.
PY - 2022/3/16
Y1 - 2022/3/16
N2 - Sulfided nickel, an established hydrocracking and hydrotreating catalyst for hydrocarbon refining, was synthesized on porous aluminosilicate supports for the hydrocracking of mixed polyolefin waste. Zeolite beta, zeolite 13X, MCM41 and an amorphous silica-Alumina catalyst support were impregnated with the single-source precursor (SSP) nickel (II) ethylxanthate for catalyst support screening. Application of this synthesis method to beta-supported nickel (Ni@Beta), as an alternative to wet impregnation using aqueous nickel (II) nitrate, provided catalytic materials with higher conversion to fluid products at the same mild batch reaction conditions of 330°C with appropriate agitation and 20 bar H2 pressure. Mass balance quantification demonstrated that SSP-derived 5wt%Ni@Beta yielded a greater than 95 wt% conversion of a mixed polyolefin feed to fluid products, compared with 39.8 wt% conversion in the case of 5wt%Ni@Beta prepared by wet impregnation. Liquid and gas products were quantitatively analysed by gas chromatography flame ionization detection (GC-FID) and gas chromatography mass spectrometry (GC-MS), revealing a strong selectivity to saturated C4 (37.3 wt%), C5 (21.6 wt%) and C6 (12.8 wt%) hydrocarbons in the case of the SSP-derived catalyst.
AB - Sulfided nickel, an established hydrocracking and hydrotreating catalyst for hydrocarbon refining, was synthesized on porous aluminosilicate supports for the hydrocracking of mixed polyolefin waste. Zeolite beta, zeolite 13X, MCM41 and an amorphous silica-Alumina catalyst support were impregnated with the single-source precursor (SSP) nickel (II) ethylxanthate for catalyst support screening. Application of this synthesis method to beta-supported nickel (Ni@Beta), as an alternative to wet impregnation using aqueous nickel (II) nitrate, provided catalytic materials with higher conversion to fluid products at the same mild batch reaction conditions of 330°C with appropriate agitation and 20 bar H2 pressure. Mass balance quantification demonstrated that SSP-derived 5wt%Ni@Beta yielded a greater than 95 wt% conversion of a mixed polyolefin feed to fluid products, compared with 39.8 wt% conversion in the case of 5wt%Ni@Beta prepared by wet impregnation. Liquid and gas products were quantitatively analysed by gas chromatography flame ionization detection (GC-FID) and gas chromatography mass spectrometry (GC-MS), revealing a strong selectivity to saturated C4 (37.3 wt%), C5 (21.6 wt%) and C6 (12.8 wt%) hydrocarbons in the case of the SSP-derived catalyst.
KW - Hydrocracking
KW - Sustainability
KW - Catalysis
KW - Recycling
KW - Zeolites
UR - http://www.scopus.com/inward/record.url?scp=85127524828&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/b965ff7e-5547-38be-a142-387ea1978676/
U2 - 10.1098/rsos.211353
DO - 10.1098/rsos.211353
M3 - Article
C2 - 35308628
SN - 2054-5703
VL - 9
JO - Royal Society Open Science
JF - Royal Society Open Science
IS - 3
M1 - 211353
ER -