Corncob to value‐added chemical transformation by metal/beta zeolite and metal/mesoporous SBA‐15 catalytic pyrolysis

Abstract

BACKGROUND: Although the pyrolysis of biomass has been investigated by many researchers, there are no data available regarding conversion to value added ester compounds from catalytic corncob pyrolysis at low temperature. In this present research thermal and catalytic cracking of residue corncob was performed at 250 to 600 ∘ C under N 2 . The performance of two acidic porous catalysts, metal-beta zeolite and mesoporous SBA-15, with different metal (Al, Pd and Ni) loadings, were compared with the non-catalytic reaction.

Advances in porous and nanoscale catalysts for viable biomass conversion

“…The significance of SiO 2 / Al 2 O 3 mole ratio on the performance of Al-doped SBA-15 catalysts was also markedly observed for corncob pyrolysis. 187 Al-SBA-15 catalyst with Si/Al ratio of 20 was selective towards 2-methoxy phenyl acetate (59.4%), an important chemical for food industry. Owing to weak acidity and medium porosity, the SiO 2 -Q10 catalyst (pore diameter of 16 nm) gave better activity for CFP of Jatropha residue compared with SiO 2 -Q3, -Q30, and -Q50 having pore diameters of 3, 45, and 68 nm, respectively.…”

Catalytic Upgrading of Lignite Pyrolysis Volatiles over AlF3-Modified HZSM-5 to Light Aromatics: Synergistic Effects of One-Step Dealumination and Realumination

“…10−12 Therefore, the coal pyrolysis volatiles need to be catalytically upgraded before downstream condensation to control its final product components and quality. 10,13,14 Notably, acidic catalysts, especially HZSM-5 (HZ5), have been successfully used for upgrading pyrolysis volatiles to enhance the LAs yield as a result of its unique pore structure, better shape-selective property, and suitable acid sites. 6,15,16 Nevertheless, the inherent microporous pore structure of HZ5 restricts the mass transfer of both reactants and products in the pore, which easily leads to carbon deposition and deactivation.…”

“…Their amounts, however, are relatively small compared with the rich heavy components such as bitumen in tar. Also, these heavy components are difficult to use directly and easy to condense and block the subsequent pipeline that causes waste of coal resources and even limits the further development of the pyrolysis technology. − Therefore, the coal pyrolysis volatiles need to be catalytically upgraded before downstream condensation to control its final product components and quality. ,, …”