scholarly journals Improvement of hydrothermal stability of MCM-41 mesoporous molecular sieve

1999 ◽  
pp. 473-474 ◽  
Author(s):  
Debasish Das ◽  
Chou-Mei Tsai ◽  
Soofin Cheng
Keyword(s):  
Molecular Sieve ◽  
Mesoporous Molecular Sieve ◽  
Hydrothermal Stability ◽  
Mcm 41

scholarly journals CERIUM INCORPORATED INTO A MESOPOROUS MOLECULAR SIEVE (MCM-41)

2016 ◽  
Vol 33 (3) ◽  
pp. 541-547 ◽  
Author(s):  
G. E. do Nascimento ◽  
M. M. M. B. Duarte ◽  
C. M. B. M. Barbosa
Keyword(s):  
Molecular Sieve ◽  
Mesoporous Molecular Sieve ◽  
Mcm 41

scholarly journals A Cu/Al-MCM-41 mesoporous molecular sieve: application in the abatement of no in exhaust gases

2005 ◽  
Vol 22 (3) ◽  
pp. 433-442 ◽  
Author(s):  
M. S. Batista ◽  
R. A. A. Melo ◽  
M. Wallau ◽  
E. A. Urquieta-González
Keyword(s):  
Molecular Sieve ◽  
Mesoporous Molecular Sieve ◽  
Exhaust Gases ◽  
Mcm 41

Oxidation of Cyclohexane over Bi-incorporated MCM-41 Mesoporous Molecular Sieve Catalyst with Oxygen as Oxidant

2005 ◽  
Vol 34 (2) ◽  
pp. 162-163 ◽  
Author(s):  
Guang Qian ◽  
Gaomeng Lu ◽  
Dong Ji ◽  
Rui Zhao ◽  
Yanxing Qi ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Mesoporous Molecular Sieve ◽  
Mcm 41

Novel efficient synthesis of glycol monoethers over a niobium-containing MCM-41 mesoporous molecular sieve

2000 ◽  
Vol 24 (8) ◽  
pp. 569-570 ◽  
Author(s):  
Jing Xin ◽  
Jishuan Suo ◽  
Xiaoming Zhang ◽  
Zhaorong Zhang
Keyword(s):  
Molecular Sieve ◽  
Mesoporous Molecular Sieve ◽  
Efficient Synthesis ◽  
Mcm 41

Effect of Synthesis Duration on the Physicochemical Properties of Siliceous Mesoporous Molecular Sieve (Si-MMS)

2012 ◽  
Vol 326-328 ◽  
pp. 647-653 ◽  
Author(s):  
Anita Ramli ◽  
Sohail Ahmed ◽  
Suzana Yusup
Keyword(s):  
Physicochemical Properties ◽  
Pore Structure ◽  
Molecular Sieve ◽  
Mesoporous Material ◽  
Mesoporous Molecular Sieve ◽  
Diffraction Peaks ◽  
Adsorption Desorption ◽  
Synthesized Materials ◽  
Synthesis Duration ◽  
Mcm 41

Pure silica mesoporous molecular sieve (MMS) solid has been synthesized at 100°C by hydrothermal process. The effect of synthesis duration from 2 to 10 days has been investigated on the physicochemical properties of mesoporous molecular sieve. Samples were characterized by low angle XRD, N2adsorption-desorption and HRTEM analysis. XRD patterns of the as-synthesized samples showed four well-defined diffraction peaks corresponding to 100, 110, 200 and 210 planes. These peaks are the fingerprint characteristics of MCM-41 mesoporous material. The high intensity diffraction peaks were observed in 8-days sample that define the high ordering of the pores and long range order. N2adsorption-desorption results showed that all samples possessed a type IV isotherm having hysteresis loop of typeH1which is an identification of mesoporous material. Calcined samples exhibited high surface area i.e., 984-1036 m2g-1, pore volume i.e., 1.00-1.13 cm3g-1and average pore diameter i.e., 3.04-3.30 nm. A hexagonal pore structure was found in the synthesized materials by HRTEM analysis, which confirms that the synthesized materials are MCM-41. HRTEM analysis showed the effect of synthesis duration on the materials and found that 8-days sample exhibited highly ordered hexagonal pore structure like honeycomb structure. All the samples were calcined at 550°C to remove the template and to study the changes in the mesoporous framework. The results showed that the mesoporous structure remained intact after calcination at 550°C, indicating that the mesoporous materials exhibit high thermal stability.

Gas Permeability Properties of Polysulfone Membranes Containing the Mesoporous Molecular Sieve MCM-41

2001 ◽  
Vol 13 (7) ◽  
pp. 2366-2373 ◽  
Author(s):  
Brian D. Reid ◽  
F. Alberto Ruiz-Trevino ◽  
Inga H. Musselman ◽  
Kenneth J. Balkus ◽  
John P. Ferraris
Keyword(s):  
Molecular Sieve ◽  
Gas Permeability ◽  
Mesoporous Molecular Sieve ◽  
Mcm 41 ◽  
Polysulfone Membranes
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