Preparation of NiMoRe/HZSM-5 Catalyst for Hydrodeoxygenation of Fatty Acid Methyl Ester
A 5 kg NiMoRe/HZSM-5 catalyst was prepared by impregnation method,and the physicochemical properties of the catalyst were analyzed using characterization techniques such as X-ray diffraction(XRD),scanning electron microscopy(SEM),and inductively coupled plasma optical emission spectrometry(ICP-OES).The optimal conditions for the catalyst in the hydrogenation deoxygenation reaction of stearic acid methyl ester were explored.The research results showed that,compared to three commercial catalysts,the metal nickel in NiMoRe/HZSM-5 had smaller and more uniformly dispersed particles,a larger BET specific surface area(SBET)of 239.1 m2/g,andexhibitedbettercatalyticactivity.Undertheoptimalreactionconditionsof 260℃,catalyst dosage of 0.3 g,reaction time of 4 hours,and initial H2 pressure of 3 MPa,both the raw material conversion rate and alkane selectivity were 100%.The catalyst demonstrated good stability,with a high raw material conversion rate of 96.1%even after the 5th cycle,and the ratio of hydrogenation deoxygenation(HDO)reaction to decarboxylation/decarbonylation(DCO)reaction decreased from 1.2 to 0.56.After scaling up the hydrogenation deoxygenation reaction of fatty acid methyl ester under solvent-free conditions using the NiMoRe/HZSM-5 catalyst,a pilot-scale evaluation was conducted on 25 kg of fatty acid methyl ester in a 2.8 L fixed bed reactor.After 15 cycles,the fatty acid methyl ester achieved a conversion rate of 98%.
fatty acid methyl esterpilot plant testhydrodeoxygenationhydrocarbon based biodiesel
国家科技期刊平台
NSTL
万方数据
