纖維素催化轉(zhuǎn)化制乙二醇

化石能源的巨大消耗和由此所帶來(lái)的環(huán)境和氣候問(wèn)題，促使當(dāng)今世界的能源結(jié)構(gòu)正從單一的化石能源向包括可再生能源、核能在內(nèi)的多元化能源結(jié)構(gòu)轉(zhuǎn)變。
　　Declining fossil fuel reserves and the global climate change associated with the consumption of fossil fuel havetriggered intensive interest in developing renewable energy sources.
　　作為可再生資源重要組成部分的生物質(zhì)資源，實(shí)現(xiàn)其清潔高效地轉(zhuǎn)化為能源化學(xué)品已經(jīng)成為許多國(guó)家的重要發(fā)展戰(zhàn)略。
　　Biomass is the only renewable organic carbonsource in nature, which endows it with unique advantages in producing various industrially important chemicals.
　　木質(zhì)纖維素是地球上最豐富的生物質(zhì)資源，以木質(zhì)纖維素為原料制備液體燃料和化學(xué)品，對(duì)于補(bǔ)充我國(guó)化石資源短缺、減輕環(huán)境污染壓力、實(shí)現(xiàn)經(jīng)濟(jì)可持續(xù)發(fā)展具有重大意義。
　　Cellulose is the most abundant biomass on earth, and the rich hydroxyl groups in the molecules make it an idealfeedstock for the production of polyols.
　　催化是實(shí)現(xiàn)木質(zhì)纖維素高效高選擇性轉(zhuǎn)化的重要途徑。
　　However, the intra- and inter-molecular hydrogen bonding network protectsthe glycosidic bonds from attack by most solvents or catalysts, and the degradation of cellulose under milderconditions has therefore become a challenging task.
　　本報(bào)告將針對(duì)木質(zhì)纖維素催化轉(zhuǎn)化制取燃油和化學(xué)品所面臨的機(jī)遇和挑戰(zhàn)，主要以纖維素轉(zhuǎn)化為大宗化學(xué)品乙二醇為例，闡述新反應(yīng)過(guò)程的開(kāi)發(fā)、多功能催化材料的設(shè)計(jì)、催化劑的原位表征以及反應(yīng)機(jī)理和反應(yīng)動(dòng)力學(xué)的微觀描述，以期為未來(lái)的生物煉制技術(shù)提供新的方法和思路。
　　In this presentation, we show that under the catalysis ofmulti-functional tungsten-based catalysts, cellulose could be transformed into ethylene glycol with a highconversion and selectivity. The performances of various catalyst formulations containing tungsten compounds werediscussed, and the reaction mechanism was proposed based on the characterizations of the catalysts and the reactionkinetics.