(2020) Environmental Research_Enhanced bioaromatics synthesis via catalytic co-pyrolysis of cellulose and spent coffee ground over microporous HZSM-5 and HY

Lee H.W., Farooq A., Jang S.-H., Kwon E.E., Jae J., Lam S.S., Jung S.-C., Park Y.-K.

(Academic Press Inc.) Environmental Research ISSN: 139351 Vol.184 Issue. Article No.109311 DOI: 10.1016/j.envres.2020.109311

Catalytic co-pyrolysis (CCP) of spent coffee ground (SCG) and cellulose over HZSM-5 and HY was characterized thermogravimetrically, and a catalytic pyrolysis of two samples was conducted using a tandem micro reactor that directly connected with gas chromatography-mass spectrometry. To access the more fundamental investigations on CCP, the effects of the zeolite pore structure, reaction temperature, in-situ/ex-situ reaction mode, catalyst to feedstock ratio, and the SCG and cellulose mixing ratio were experimentally evaluated. The temperature showing the highest thermal degradation rate of cellulose with SCG slightly delayed due to the interactions during the thermolysis of two samples. HZSM-5 in reference to HY produced more aromatic hydrocarbons from CCP. With respect to the reaction temperature, the formation of aromatic hydrocarbons increased with the pyrolytic temperature. Moreover, the in-situ/ex-situ reaction mode, catalyst/feedstock, and cellulose/SCG ratio were optimized to improve the aromatic hydrocarbon yield. © 2020 Elsevier Inc.

This work was also supported by the C1 Gas Refinery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT ( 2015M3D3A1A01064899 ). Also, this work was supported by the National Research Foundation of Korea (NRF) grants funded by the Korea government ( MSIT ) ( NRF-2019R1A4A1027795 ).