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Pyrolysis of marine biomass to produce bio-oil and its upgrading using a novel multi-metal catalyst prepared from the spent car catalytic converter

Sabegh, Mahzad Yaghmaei, Norouzi, Omid, Jafarian, Sajedeh, khosh, Akram Ghanbari, Tavasoli, Ahmad
Bioresource technology 2018 v.249 pp. 473-478
Cladophora glomerata, Fourier transform infrared spectroscopy, X-ray diffraction, biofuels, biomass, catalysts, energy-dispersive X-ray analysis, gasification, nitrogen compounds, pyrolysis, scanning electron microscopy, temperature, thermal stability
In order to reduce the economic and environmental consequences caused by spent car catalyst, we herein report for the first time a novel promising multi-metal catalyst prepared from spent car catalytic converters to upgrade the pyrolysis bio-oils. The physico-chemical properties of prepared catalyst were characterized by XRD, EDS, FESEM, and FT-IR analyses. The thermal stability of the multi-metal catalyst was studied with TGA. To investigate the activity of the catalyst, Conversion of Cladophora glomerata (C. glomerata) into bio-products was carried out via a fixed bed reactor with and without catalyst at the temperature of 500°C. Although the catalyst didn’t catalyze the gasification reaction, bio-oil was upgraded over the catalyst. The main effect of the catalyst on the bio-oil components is deoxygenating of nitrogen compounds and promotion the ketonization reaction, which converts acid to ketone and declines the corrosive nature of bio-oil.