Improved H2 yields over rice husk derived SiO2 nanoparticles supported Ni catalyst during non-oxidative methane cracking

Autor:	Akula Venugopal, Manda Kalpana, Komandur V. R. Chary, Beata Michalkiewicz, Gutta Naresh, Boggala Sasikumar, Vijay Kumar Velisoju, Kandula Manasa
Rok vydání:	2021
Předmět:	Materials science chemistry.chemical_element Husk Methane Catalysis Nanomaterials symbols.namesake chemistry.chemical_compound Amorphous carbon chemistry Chemical engineering Chemisorption symbols Raman spectroscopy Carbon
Zdroj:	Journal of the Energy Institute. 99:73-81
ISSN:	1743-9671
DOI:	10.1016/j.joei.2021.08.005
Popis:	The present work emphasizes synthesis and evaluation of rice husk (RH) derived nano structured silica material as support for Ni in the catalytic methane cracking (CMC) process. CO chemisorption results showed the 15 wt%Ni/RH-SiO2 catalyst exhibited a higher ratio of surface decorated Ni sites compared to other Ni loadings. TEM analysis of deactivated catalysts indicated the formation of carbon nano materials (mostly CNT/CNF) along with pure H2. Raman spectroscopic analysis of the deactivated catalysts exhibited a low proportion of graphitic carbon with a shift at 1320 cm−1 than the amorphous carbon band at 1580 cm−1. The superior performance of Ni supported on SiO2 was rationalized by H2-TPR, 29Si MAS NMR, XRD and BET-surface area analyses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::190ad84994b5d9b0412d01eeb2bdcd9f https://doi.org/10.1016/j.joei.2021.08.005 Zobrazit plný text záznamu Full Text from ScienceDirect