Preparation of bio-diesel catalyzed by K2CO3/Al-Ni and K2CO3/Al-Ni-O solid base
Wu Xiaoni*, Ma Shaobo, Chen Li, Yin Wenqing, Gu Cheng
Xi’an Origin Chemical Technologies Co.,Ltd., Xi’an 710061, Shaanxi, China
Abstract
K2CO3/Al-Ni and K2CO3/Al-Ni-O solid base catalysts were prepared by using Al-Ni hydrotalcite and its compound oxide after calcination as the carriers and loading K2CO3.The as-prepared catalysts were used for catalytic reaction of edible rapeseed oil to bio-disel.The effects of molar ratios of alcohol to rapeseed oil, reaction time, reaction temperatures on the properties of the catalysts were investigated.The results showed that the yield of bio-diesel reached 82.4% under the condition of reaction temperature 60 ℃,reaction time 6 h,methanol/oil molar ratio 10∶1 and catalyst amount 5% of oil mass.After several times of repeated use experiments,the catalyst still possessed stable catalytic activity.
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山文斌, 董秀芹, 张敏华. 非均相法催化制备生物柴油的最新研究进展[J]. , 2013, 32(6): 1261-1266. ShanWenbin, DongXiuqing, ZhangMinhua. Research advances in heterogeneous catalysis for production of bio-diesel[J]. , 2013, 32(6): 1261-1266.
Heterogeneous continuous process is the development direction of commercial production of biodiesel. The development of heterogeneous catalyst and new process has been the focus in the field of biodiesel,which is also the key to achieving green,economical,efficient production of biodiesel. The possible reaction mechanisms of transesterification reaction were discussed. The research status of solid acid-base catalysts was reviewed. The excellent catalytic performance and the existing problem of the solid acid-base catalysts were reported. A variety of new multiphase biodiesel reactors were introduced,especially the reaction-separation coupled technologies used in biodiesel production. At last,the future development of biodiesel was also presented. The development of new acid-base bifunctional catalyst and advanced multiphase continuous reaction-separation coupled process will promote development of biodiesel.
刘伟伟, 苏有勇, 张无敌, 等. 生物柴油中甘油测定方法的研究[J]. , 2005, (3): 14-16. LiuWeiwei, SuiYouyong, ZhangWudi, et al. A study about analysis of glycerin content in bio-diesel[J]. , 2005, (3): 14-16.