【摘 要】
：
The mechanism of dimethyl carbonate(DMC) formation from CO_2 and methanol is investigated using three well-shaped CeO_2 catalysts, nanorod, nanocube and octahed
【机 构】
：
Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin
【出 处】
：
Chinese Chemical Letters
论文部分内容阅读
The mechanism of dimethyl carbonate(DMC) formation from CO_2 and methanol is investigated using three well-shaped CeO_2 catalysts, nanorod, nanocube and octahedron, which are packed with different crystal planes. In situ Fourier Transform Infrared Spectroscopy(FTIR) is employed to probe each reaction step in the DMC synthesis. The number of –OH groups and the species of CO_2 adsorptions on ceria surface have significant influence on the activity of ceria with different morphologies. Rod-ceria has favorable catalytic activity because of the large amount of –OH groups and the formation of bidentate carbonate species.
The mechanism of dimethyl carbonate (DMC) formation from CO 2 and methanol is investigated using three well-shaped CeO 2 catalysts, nanorod, nanocube and octahedron, which are packed with different crystal planes. In situ Fourier Transform Infrared Spectroscopy (FTIR) is employed to probe each reaction step in the DMC synthesis. The number of -OH groups and the species of CO_2 adsorptions on ceria surface have significant influence on the activity of ceria with different morphologies. Rod-ceria has favorable catalytic activity because of the large amount of -OH groups and the formation of bidentate carbonate species.
其他文献
1.文稿务求论点明确,数据可靠,文字精炼,层次分明,标点符号使用正确,要有科学性、实用性、新颖性、及时性,未曾在国内外刊物上发表过。2.综述、专论不超过5000字,研究与开发
5月20—23日,“第七届中国国际警用装备博览会”在北京举行,仪征化纤与下道客户携手联展,用仪化超高相对分子质量聚乙烯纤维制作的防弹衣、防弹板、防弹头盔、防爆毯等产品受
价值50万瑞典克朗的2014年Alf de Ruvo奖学金授予了Christina Dahlstrm博士,褒奖她在涂布纸涂布均匀性基础性研究方面所做的贡献。该研究采用定量显微镜,揭示了导致涂层非
Graphene oxide and Ni-Al layered double hydroxides(GO@LDH) nanocomposites were synthesized via a one-pot hydrothermal process,and characterized by X-ray diffrac
有一天,我和妈妈从公园回来,看到小区的两位保安正仰着头看楼顶,我好奇地也向上望,哇,好大的一个马蜂窝!马蜂窝在九楼的屋檐下,上小下大,呈水滴形。因为距离太远我看不见马峰
摘 要：现代都市道路改造升级和城市地铁轻轨建设越来越普遍，城市燃气经营单位在道路下面敷设的燃气管道，也要根据政府城市建设需要改道或拆除。对城市燃气中压管道带气动火作业危险和可操作性进行研究，发现在管道带气动火作业时，只要当管道压力严格控制在安全作业范围内，带气动火作业人员严格执行作业程序，严格检测控制混合气体爆炸极限浓度，燃气管道带气动火作业安全风险可控、施工经济高效、带气动火可操作。 关键词：
曾长期担任菲律宾外交部长的罗慕洛穿上鞋时身高才只有1,63米。他曾为自己的身材而白惭形秽。年轻时,他也穿过高跟鞋,这种方法却令他不舒服——精神上的不舒服。他感到这是自
河北经贸大学北校区太阳能蓄热采暖及热水综合示范项目于近日启用,目前系统运行情况正常,供暖效果良好。该项目是国内最大的太阳能蓄热采暖及热水综合示范项目,项目主要在非
边抑制乙醛蒸馏塔内碘化氢和醋酸浓度上升边生产醋酸。醋酸生产过程包括甲醇与一氧化碳反应步骤;将反应混合物加入闪蒸器分离成挥发性组分(2A)和低沸点组分(2B);将挥发性组分
We conducted a molecular dynamics(MD)simulation to address the novel flow behaviors induced by a solid particle in nanochannels.Two basic flows,i.e.,Poiseuille