Synthesis and Characterization of Worm-shaped Tubular Lanthanum Aluminum Composite Mesoporous Materials

宋伟明; 左春玲; 邓启刚

doi:10.1016/S1004-9541(09)60179-8

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Synthesis and Characterization of Worm-shaped Tubular Lanthanum Aluminum Composite Mesoporous Materials

Updated：2026-01-06

- Synthesis and Characterization of Worm-shaped Tubular Lanthanum Aluminum Composite Mesoporous Materials
- Chinese Journal of Chemical Engineering Vol. 19, Issue 1, Pages: 70-75(2011)
- Affiliations：
  
  College of Chemistry and Chemical Engineering of Qiqihar University,Qiqihar,China,161006
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(09)60179-8
  CLC：
- Published：2011
- Accepted：
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SONG Weiming, ZUO Chunling, DENG Qigang. Synthesis and Characterization of Worm-shaped Tubular Lanthanum Aluminum Composite Mesoporous Materials[J]. , 2011, 19(1): 70-75.
DOI：

SONG Weiming, ZUO Chunling, DENG Qigang. Synthesis and Characterization of Worm-shaped Tubular Lanthanum Aluminum Composite Mesoporous Materials[J]. , 2011, 19(1): 70-75. DOI： 10.1016/S1004-9541(09)60179-8.

摘要

Abstract

The lanthanum aluminum mesoporous materials were synthesized using sodium dodecyl sulfate as a template agent by ultrasonic hydrothermal method.The resulting samples were characterized by low angle X-ray diffraction(XRD)

adsorption-desorption studies

transmission electron microscopy(TEM)and surface morphology analysis(SEM)

surface acid(NH

-TPD)

reducibility properties(TPR)

X-ray energy dispersive spectrometer(EDS)and thermogravimetric analysis(TG/DTG).A l/La composite mesoporous material were synthesized with

(Al):

(La)=70:1.0

80℃ of reaction temperature

20 h of reaction time

12 h of crystallization time

650℃ of calcination temperature.The specific surface area of the sample is 273.90 m

·g

-1

with the average diameter 5.642 nm and pore volume 0.2354 cm

·g

-1

.The samples have mesoporous structure and its particles are similar to a worm-shaped tubular structure.The influence of calcination temperature on the surface physical and chemical properties of Al/La composited mesoporous materials was examined

and the results showed that the acid strength was increased but the amount of acidic sites is decreased as the calcination temperature increased.It was found that the sample calcined at 650℃ had appropriate acid content

acid strength and better reducibility.

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