2015/03/15 by Abhishek Dhar, Dhar, Abhishek, Abhishek Dutta +7
Chemistry · Engineering · #Catalysis and Hydrodesulfurization Studies #Chemical Synthesis and Reactions #Sulfated zirconium-sillicon binary oxide #Zeolite Catalysis and Synthesis #n-alkane Isomerization. #normal temperature and pressure #reaction mechanism #simple precipitation chemical method
paper · doi:10.48317/imist.prsm/morjchem-v3i3.2786
openalex publication_date 2015/03/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/01
Nano structured sulfated zirconium-sillicon binary oxides were synthesized in different mole-ratios of Zr4±:Si4±, 2:1 (SZS-1), 1:1 (SZS-2) and 1:2 (SZS-3), by a simple precipitation chemical method using green chemistry. The preparation of the catalysts from rice husk that is a waste product is highly exclusive and unique. Evaluation of these catalysts was carried out in a batch reaction system at normal temperature and pressure as well as at high temperature –flow-reactor during the isomerization of n-hexane, n-heptane and n-octane to their corresponding branched isomers. The best performing catalyst (SZS-2) was characterized by TEM, SEM, AFM, FTIR, TG-DTA, BET and small angle XRD. The super acidity of the catalyst was measured by performing ammonia-TPD. From this end, the SZS-2 contains nano particles of ~ 20 nm, presenting an amorphous nature and having no definite surface morphology. Catalyst evaluation and characterization allowed proposing a reaction mechanism, elucidating a probable role of Bronsted and Lewis acid sites on the studied reaction-catalyst. This catalyst can be effectively used in future to enhance the efficiency of petroleum.