| 肉桂醛在γ-Al2O3、La2O3和La2O3/γ-Al2O3表面吸附的红外光谱分析 |
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| 引用本文： | 何耀,陈希慧.肉桂醛在γ-Al2O3、La2O3和La2O3/γ-Al2O3表面吸附的红外光谱分析[J].工业催化,2011,19(5):70-73. |
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| 作者姓名： | 何耀 陈希慧 |
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| 作者单位： | 广西大学化学化工学院，广西 南宁 530004 |
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| 摘 要： | 利用傅立叶变换红外光谱,研究真空条件(87.78 kPa,353 K)下肉桂醛在γ-Al2O3、La2O3和La2O3/γ-Al2O3样品表面的吸附情况,并根据文献归属了肉桂醛吸附在这些氧化物表面的红外吸收峰.结果表明,肉桂醛在氧化物表面产生多部位吸附.吸附在La2O3/γ-Al2O3样品的肉桂醛分子的1 496 cm...
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| 关 键 词： | 催化化学 肉桂醛 红外光谱 氧化镧 活性氧化铝 表面吸附 |
Infrared spectroscopy analysis of cinnamaldehyde absorbed on the surface of γ-Al2O3, La2O3 and La2O3/γ-Al2O3 |
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| HE Yao,CHEN Xihui.Infrared spectroscopy analysis of cinnamaldehyde absorbed on the surface of γ-Al2O3, La2O3 and La2O3/γ-Al2O3[J].Industrial Catalysis,2011,19(5):70-73. |
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| Authors: | HE Yao CHEN Xihui |
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| Affiliation: | School of Chemistry ＆ Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China |
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| Abstract: | The adsorption of cinnamaldehyde on γ-Al2O3,La2O3 and La2O3/γ-Al2O3 was investigated by FT IR technique under vacuum condition （87.78 kPa,353 K）.According to the relative literature,the infrared spectroscopy adsorption bands of cinnamaldehyde adsorbed on the three oxide surfaces were assigned.The results indicated that cinnamaldehyde was adsorbed in multi spots on the surfaces of the oxides;the intensity of 1 496 cm-1,1 388 cm-1 characteristic adsorption bands of cinnamaldehyde adsorbed on La2O3/γ-Al2O3 was higher than that on γ-Al2O3, which showed that the quantity of alkali points on La2O3/γ-Al2O3 was more than those on γ-Al2O3.Cinnamaldehyde adsorbed on the surfaces of oxides could produce the surface species Ar—CH=CH—COO-（υ=1 410 cm-1）. |
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| Keywords: | catalytic chemistry cinnamaldehyde infrared spectroscopy lanthana activated alumina surface adsorption |
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