Abstract

Rudy Situmeang

DOI : http://dx.doi.org/10.13005/ojc/340139

This work was carried out to study the potency of modified  lampung-zeolite as catalyst for conversion of CO₂/H₂ into alcohol compounds.  The zeolite was activated  using 0.1N nitric acid, by soaking the zeolite in the acid for 2 hours and then impregnated by Fe₂O₃ with varied content of 1 – 7% (g/g).  To examine its activity, the catalyst was used in CO₂/H₂ conversion experiment at different temperatures (200 to 400^oC). The experimental results indicated the zeolite impregnated by iron ions exhibits catalytic activity, and  the highest alcohol formation (26000 ppm) was achieved by 5%Fe₂O₃ doped zeolite at 200^oC.  X-ray diffraction of washed-zeolite revealed that its crystalline phase is  a clinoptilolite type of zeolite with monoclinic structure. Infra-red spectra analysis proved that 5% Fe₂O₃ doped  zeolite has BrØnsted-Lowry and Lewis acid sites presenting at wavenumber of   1466  and 1648 cm^-1 respectively. Furthermore, SEM analysis implied that Lampung zeolite has a channel pattern and relatively good porous distribution.

Zeolite; CO2; Hydrogenation; Acid Sites; Alcohols

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