naa a22 4500 510735045 CHVBK 20180411083006.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s12039-013-0362-5 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0362-5 Modified calcium oxide as stable solid base catalyst for Aldol condensation reaction [Elektronische Daten] [YING TANG, JINGFANG XU, XUEFAN GU] A highly efficient and stable solid-base catalyst for Aldol condensation was prepared by modifying commercial CaO with benzyl bromide in a simple way. It was found that modified CaO can effectively catalyse the Aldol condensation of cyclohexanone and benzaldehyde, as well as various benzaldehydes, to produce 2-benzylidenecyclohexanone with a good selectivity and high yield. Higher yield of 95.8% was obtained over modified CaO after 3 h, which is short compared with the yield of 92.1% after 12 h over commercial CaO. The influence of several reaction parameters, such as temperature, catalyst loading, was investigated. The humidity test over modified CaO reveals that the basic centres of modified CaO are stable for CO2 and moisture. From the results of Fourier transform-infrared (FT-IR) and Thermogravity analysis (TG) characterization, the modifier was bonded on surface of CaO chemically and almost no Ca(OH)2 formed during the modification process. The type of aldehyde has great influence on the yield of aldol condensation. Graphical Abstract The heterogeneous catalytic activity for the Aldol condensation of cyclohexanone and benzaldehyde is greatly enhanced by simple surface modification of CaO by incorporating 0.001% benzyl bromide. Indian Academy of Sciences, 2013 Aldol condensation nationallicence CaO nationallicence surface modification nationallicence TANG YING College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi, China aut XU JINGFANG College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi, China aut GU XUEFAN College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi, China aut Journal of Chemical Sciences Springer-Verlag 125/2(2013-03-01), 313-320 0974-3626 125:2<313 2013 125 12039 https://doi.org/10.1007/s12039-013-0362-5 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0362-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- TANG YING College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi, China aut NATIONALLICENCE 700 1- XU JINGFANG College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi, China aut NATIONALLICENCE 700 1- GU XUEFAN College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, Shaanxi, China aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer-Verlag 125/2(2013-03-01), 313-320 0974-3626 125:2<313 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer