欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以蔗糖为原料，固体SO4^2＋／TiO2．ZrO2为催化剂，以水为溶剂制备乙酰丙酸。研究了浸渍用硫酸浓度和催化剂焙烧温度对催化制活性的影响，并探讨了不同反应条件及催化剂重复使用次数对乙酰丙酸得率的影响。用XRD和NH3-TPD对使用前后的催化剂的结构和酸性进行了表征。实验结果表明，1．0mol／L硫酸浓度浸渍，550℃焙烧3h的催化剂活性较强。在催化剂投加量为1．0g，反应温度为190℃的条下反应1h，乙酰丙酸摩尔得率高达50．0％。回收的SO4^2-TiO2-ZrO2催化剂焙烧后在多次重复使用过程中仍然表现出较好的催化活性。
英文摘要：
Levulinic acid was prepared by solid SO4^2-/TiO2-ZrO2 catalyst from sucrose in water. The influence of impregnation concentration of sulfuric acid and calcinations temperature on catalyst activity was studied. The effect of different reaction conditions and catalyst reuse cycle on levulinic acid yield was investigated. The surfaces structure and acidity changes of the fresh and used catalysts were characterized by XRD and NH3-TPD. Experimental results indicated that the optimal catalyst could be obtained under the following conditions： 1 moFL impregnation concentration of sulfuric acid, 550 ℃ of calcination temperature and 3 h of calcinations time. And the yield of levulinic acid was about 50.0% （molar percent） under the optimum conditions： amount of catalyst lg, reaction temperature 190℃ and reaction time lh. The recovered SO4^2-/TiO2-ZrO2 catalyst after calcination was found to remain high catalytic activity after being reused for several times.
同期刊论文项目
同项目期刊论文
Hydrogenation of Ethyl Acetate to Ethanol over Ni-Based Catalysts Obtained from Ni/Al Hydrotalcite-L
Poplar Woodchip as a Biorefinery Feedstock-Prehydrolysis with Formic/Acetic Acid/Water System, Xylit
Enhancing the enzymatic hydrolysis of corn stover by an integrated wet-milling and alkali pretreatme
Wet Aerobic Oxidation of Lignin into Aromatic Aldehydes Catalysed by a Perovskite-type Oxide: LaFe1-
Hydrolysis of wheat straw hemicellulose and detoxification of the hydrolysate for xylitol production
Preparation of xylose and kraft pulp from poplar based on formic/acetic acid/wheat system hydrolysis
Changes of the surface structure of corn stalk in the cooking process with active oxygen and MgO-bas
Efficient conversion of D-glucose into D-sorbitol over MCM-41 supported Ru catalyst prepared by a fo
Perovskite-type Oxide LaMnO3: An Efficient and Recyclable Heterogeneous Catalyst for the Wet Aerobic
Silicalite filled polyether-block-amide membranes for recovering ethanol from aqueous solution by pe
期刊信息
位置：