Farooq Abid, Shiung Lam Su, Hoon Rhee Gwang, Lee Jechan, Ali Khan Moonis, Jeon Byong-Hun, Park Young-Kwon
School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea.
Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia.
Bioresour Technol. 2022 Jun;353:127131. doi: 10.1016/j.biortech.2022.127131. Epub 2022 Apr 7.
Catalytic fast pyrolysis of low sulfonated Kraft lignin was performed under different atmospheric environments such as N, CH and the gas derived from CH decomposition (CH-D). The use of Zn- or Mo-loaded HZSM-5 as catalyst led to a higher pyrolytic oil yield compared to parent HZSM-5 in CH and CH-D atmospheres. The yields of benzene, toluene, and xylenes were increased by the synergistic effects from metal loading, higher H/C ratio, higher acidity, and CH activation. The enhanced CH activation via metal loading resulted in higher methylation of alkyl moieties and 33% increase in the total yield of benzene, toluene, and xylenes in comparison to parent HZSM-5. A higher H/C ratio of 6 via CH decomposition led to the formation of a hydro-pyrolysis environment. Moreover, the CH-D environment showed H/CH ratio of 0.36 in the product gas which warranted the presence of more H under the CH-D pyrolysis environment.
在不同的大气环境（如N、CH以及CH分解产生的气体（CH-D））下对低磺化硫酸盐木质素进行催化快速热解。与母体HZSM-5相比，在CH和CH-D气氛中使用负载Zn或Mo的HZSM-5作为催化剂可获得更高的热解油产率。金属负载、更高的H/C比、更高的酸度和CH活化的协同作用提高了苯、甲苯和二甲苯的产率。通过金属负载增强的CH活化导致烷基部分的甲基化程度更高，与母体HZSM-5相比，苯、甲苯和二甲苯的总产率提高了33%。通过CH分解得到的更高的H/C比为6导致形成了加氢热解环境。此外，CH-D环境在产物气中的H/CH比为0.36，这保证了在CH-D热解环境下存在更多的H。
