Effect of Ni/Al₂O₃-SiO₂and Ni/Al₂O₃-SiO₂with K₂O Promoter Catalysts on H₂, CO and CH₄Concentration by CO₂Gasification of<i>Rosa Multiflora</i>Biomass

The thermal behaviour of the Rosa mutiflora biomass by thermogravimetric analysis was studied at heating rate 3 K min 1 from ambient temperature to 950 C. TGA tests were performed in high purity carbon dioxide (99 998%) with a flow rate 200 ml/min and 100 mg of sample, milled and sieved to a particle size below 250 mm. Moreover, yields of gasification products such as hydrogen (H 2 ), carbon monoxide (CO) and methane (CH 4 ) were determined based on the thermovolumetric measurements of catalytic (Ni/Al 2 O 3 -SiO 2 and Ni/Al 2 O 3 -SiO 2 with K 2 O promoter catalysts) and non-catalytic gasification of the Rosa multiflora biomass. Additionally, carbon conversion degrees are presented. Calculations were made of the kinetic parameters of carbon monoxide and hydrogen formation reaction in the catalytic and non-catalytic CO 2 gasification processes. A high temperature of 950 C along with Ni/Al 2 O 3 -SiO 2 and Ni/ Al 2 O 3 -SiO 2 with K 2 O promoter catalysts resulted in a higher conversion of Rosa mutiflora biomass into gaseous yield production with greatly increasing of H 2 and CO contents. Consequently, H 2 and CO are the key factors to produce renewable energy and bio-gases (synthesis gas). The parameters obtained during the experimental examinations enable a tentative assessment of plant biomasses for the process of large-scale gasification in industrial sectors.

Перевод пока недоступен