Abstract
This research was aimed to investigate the effect of Co and Co-Mo metal loaded on Sarulla Natural Zeolite which has been activated and calcined (SNZ-Cal) as supports for better understanding of characterization and catalytic activity on hydrocracking of MEFA rubber seed oil. The Co and Co-Mo metal was added through a wet impregnation method using Co(NO3)2·6H2O and (NH4)·6Mo7O24·4H2O precursor salts. The catalyst was oxidized at 500 °C for 2 h within oxygen gas flow, followed by a reduction process with H2 gas flow with similar condition to obtain the catalysts. Based on the result, it was found that the resulted catalysts displayed an increase in crystal grain size compared to the metal-free catalyst. Particularly, catalyst that was impregnated with Co metal has a larger surface area and pore diameter and smaller pore volume than Co-Mo metal impregnated to the catalyst. In fact, it was revealed that this catalyst possessed the highest catalytic activity and selectivity. Furthermore, the resulting gas products reached 64 wt.% and the distribution of biogasoline fraction of hydrocarbons (C6-C12) amounted to 83.19 wt.%.
Highlights
Biofuel production from vegetable oil has enormous potential as an alternative energy source to replace fossil fuels
Rubber seed oils are non-edible oils obtained from rubber seeds; whose availability is very abundant in Indonesia but not yet optimally utilized
The acid site is contained in the Sarulla natural zeolite (SNZ)-Cal carrier material
Summary
Biofuel production from vegetable oil has enormous potential as an alternative energy source to replace fossil fuels. Biofuel can be obtained from biomass and agricultural or plantation products such as palm, vegetable, soybean, and rubber seed oil [1]. The rubber seed oils contain the main linoleic acid 39 of 67% and oleic acid of 23.52% [2]. Several methods can be used to convert vegetable oils into biofuels, such as pyrolysis, gasification, and trans-esterification, catalytic cracking reaction and hydrocracking reaction [3,4,5,6,7]. Catalytic cracking [8] and hydrocracking reaction [7] are one of the technologies that are widely used to Catalysts 2020, 10, 121; doi:10.3390/catal10010121 www.mdpi.com/journal/catalysts
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