TY - JOUR
T1 - Effect of Al sources on the synthesis and acidic characteristics of mesoporous aluminosilicates of MCM-41 type
AU - Reddy, Kondam Madhusudan
AU - Song, Chunshan
N1 - Funding Information:
We are grateful to Dr. H. H. Schobert for his encouragement and support. Financial support was provided by the US Department of Energy, the Pittsburgh Energy Technology Center, and the US Air Force, Wright Laboratories.
PY - 1998
Y1 - 1998
N2 - This paper reports the synthesis of four series of mesoporous aluminosilicates (Al-MCM-41) and their acidic characteristics. Four different Al compounds were examined as Al source in the hydrothermal synthesis of Al-MCM-41, including pseudo boehmite, aluminum sulfate, aluminum isopropoxide, and sodium aluminate. Synthesized samples were characterized by XRD, chemical analysis, nitrogen adsorption, and 27Al MAS NMR. The acidic characteristics of the Al-MCM-41 samples were characterized using temperature-programmed desorption of n-butylamine, and probe hydrocracking reactions of 1,3,5-triisopropylbenzene and 1,3,5-tri-t-butylbenzene. The results clearly indicate that the Al source used for synthesizing Al-MCM-41 samples has a major impact on the Al incorporation in their framework and their acidic properties. Al-MCM-41 prepared with Al isopropoxide and sodium aluminate showed improved acidic properties than those with pseudo boehmite and Al sulfate.
AB - This paper reports the synthesis of four series of mesoporous aluminosilicates (Al-MCM-41) and their acidic characteristics. Four different Al compounds were examined as Al source in the hydrothermal synthesis of Al-MCM-41, including pseudo boehmite, aluminum sulfate, aluminum isopropoxide, and sodium aluminate. Synthesized samples were characterized by XRD, chemical analysis, nitrogen adsorption, and 27Al MAS NMR. The acidic characteristics of the Al-MCM-41 samples were characterized using temperature-programmed desorption of n-butylamine, and probe hydrocracking reactions of 1,3,5-triisopropylbenzene and 1,3,5-tri-t-butylbenzene. The results clearly indicate that the Al source used for synthesizing Al-MCM-41 samples has a major impact on the Al incorporation in their framework and their acidic properties. Al-MCM-41 prepared with Al isopropoxide and sodium aluminate showed improved acidic properties than those with pseudo boehmite and Al sulfate.
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U2 - 10.1016/s0167-2991(98)81004-5
DO - 10.1016/s0167-2991(98)81004-5
M3 - Article
AN - SCOPUS:0000844440
SN - 0167-2991
VL - 117
SP - 291
EP - 299
JO - Studies in Surface Science and Catalysis
JF - Studies in Surface Science and Catalysis
ER -