Effect of KOH, reaction temperature and time, and introduced carbonization step on the amount and composition of syngas\nas well as porous properties of the carbon products for CO2 gasification of coconut shell at low temperatures (300ââ?¬â??700âË?Ë?C) was\ninvestigated. Results showed that the presence of potassium hydroxide and gasification temperature had a significant effect on\nthe amount and composition of syngas product and facilitated the rate of hydrogen and carbon monoxide formation. It was also\nfound that carbonization step could promote the generation of hydrogen gas as well as increasing the gas heating value per kg of\ngas. Furthermore, the porosity development of carbon product was found to be influenced by the chemical ratio and gasification\ntemperature.The optimal conditions for achieving high hydrogen composition and specific surface area were to gasify coconut shell\nunder CO2 at 600âË?Ë?C for 60 min with carbonization step and with chemical weight ratio of 3.0. This condition gave the hydrogen\ncomposition as high as 29.70 %weight of produced syngas with heating value of 41.4 MJ/kg of gas and specific surface area of\n2650m2/g of the carbon product.
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