中文摘要：

应用尿素热解法合成晶相单一、结晶度较好的Ni（HCO3）2多孔材料,借助多种表征手段对其物化性能进行表征.N2吸附-脱附结果表明Ni（HCO3）2多孔材料有99.03 m3/g的比表面积、7.8 nm左右的孔径;扫描电镜（SEM）和粒度分布结果说明Ni（HCO3）2微球的粒径均匀;热重分析结果表明500℃是热解Ni（HCO3）2制备NiO的适宜温度;CO2-TPD和NH3-TPD结果表明Ni（HCO3）2具有明显的酸碱双功能活性中心;透射电镜（TEM）结果表明Ni（HCO3）2颗粒是由六边形纳米片聚集而成的,且颗粒具有孔隙结构.将Ni（HCO3）2催化剂应用于苯甲醛与乙醇一步法合成安息香乙醚反应中,Ni（HCO3）2显示出优异的催化活性,反应平衡转化率高达57.5％,安息香乙醚的选择性近100％.

英文摘要：

Ni（HCO3）2 with unique phase and high crystallinity was synthesized with urea hydrolysis. The as-prepared samples were well characterized in detail. N2 adsorption and desorption result manifests a high surface area of 99.03 m2/g with a pore size of 7.8 nm. Scanning electron microscopy （SEM） and particle size distribution reveal that the diameters of the formed pellets are uniform. Thermogravimetry （TG） analysis result shows that 500 ℃ could be the appropriate temperature for converting Ni（HCO3）2 precursors into NiO via a thermal decomposition process. CO2 and NH3 temperature-programmed desorption results show that Ni（HCO3）2 has explicit acid-base sites. Transmission electron microscopy （TEM） results vividly indicate that the pellets are aggregated by hexagonal platelets and possess porous structures. Ni（HCO3）2 can efficiently catalyze the one-step synthesis of benzoin ethyl ether from benzaldehyde and ethanol, with the conversion ofbenzaldehyde up to 57.5% and nearly 100% selectivity of benzoin ethyl ether.