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Bio-oil Upgrading via Ether Extraction, Looped-Oxide Catalytic Deoxygenation, and Mild Electrocatalytic Hydrogenation Techniques
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-07-01 , DOI: 10.1021/acs.energyfuels.0c01719
Tengfei He 1 , Zhaoping Zhong 1 , Bo Zhang 1
Affiliation  

To overcome the disadvantages of primary bio-oil, two technical routes, namely, bio-oil ether extraction coupled with ether-soluble fraction microwave-assisted catalytic esterification (ES-MACE) and looped-oxide catalytic deoxygenation/mild electrocatalytic hydrogenation (MECH)/catalytic cracking to produce hydrocarbons, were conducted for bio-oil upgrading. With the first route, it was found that the highest ether extraction efficiency was achieved when the volume ratio of bio-oil/ether was 1:2 and the ES quality was effectively improved in comparison to primary bio-oil; after the ES-MACE, the relative content of acids in the ES decreased dramatically, while that of esters increased. With the second route, the oxygen content in the bio-oil deoxidized by a Zn powder decreased by 23.92%. Moreover, the relative contents of acids, alcohols, and sugars diminished, while those of esters, carbonyls, and phenols rose. Then, the MECH step further refined the deoxidized bio-oil; the relative contents of acids, esters, carbonyls, phenols, sugars, and furans decreased, and that of alcohols increased substantially. At the same time, the hydrogen/carbon effective ratio greatly improved after the refining process. Finally, catalytic cracking by proton-exchanged zeolite Socony Mobil-5 of the obtained bio-oil was carried out to produce hydrocarbons; the carbon yield of aromatics, olefins, and total chemicals increased along with the hydrogen/carbon effective ratio.

中文翻译:

通过醚提取,环氧化物催化脱氧和温和的电催化加氢技术进行生物油升级

为了克服主要生物油的缺点,有两种技术路线,即生物油醚萃取结合醚可溶级分微波辅助催化酯化(ES-MACE)和环氧化物催化脱氧/轻度电催化加氢(MECH)进行催化裂化生产碳氢化合物以进行生物油提质。在第一种方法中,发现当生物油/醚的体积比为1:2时,可以达到最高的醚萃取效率,并且与原始生物油相比,ES质量得到了有效改善。ES-MACE后,ES中酸的相对含量急剧下降,而酯的相对含量却增加。通过第二种途径,锌粉脱氧后的生物油中的氧含量降低了23.92%。此外,酸,醇,糖减少,而酯,羰基和苯酚的糖增加。然后,MECH步骤进一步精制脱氧的生物油。酸,酯,羰基,酚,糖和呋喃的相对含量降低,醇的相对含量大幅提高。同时,精制后氢/碳有效比大大提高。最后,通过质子交换的沸石Socony Mobil-5对获得的生物油进行催化裂化以产生烃。芳烃,烯烃和总化学物质的碳收率随氢/碳有效比的增加而增加。酒精的含量大幅度增加。同时,精制后氢/碳有效比大大提高。最后,通过质子交换的沸石Socony Mobil-5对获得的生物油进行催化裂化以产生烃。芳烃,烯烃和总化学物质的碳收率随氢/碳有效比的增加而增加。酒精的含量大幅度增加。同时,精制后氢/碳有效比大大提高。最后,通过质子交换的沸石Socony Mobil-5对获得的生物油进行催化裂化以产生烃。芳烃,烯烃和总化学物质的碳收率随氢/碳有效比的增加而增加。
更新日期:2020-08-20
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