The Experts below are selected from a list of 792 Experts worldwide ranked by ideXlab platform
Graeme J Millar - One of the best experts on this subject based on the ideXlab platform.
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advances in mesoporous molecular sieve mcm 41
Industrial & Engineering Chemistry Research, 1996Co-Authors: X S Zhao, G Q Lu, Graeme J MillarAbstract:The discovery of mesoporous molecular sieves, MCM-41, which possesses a Regular Hexagonal Array of uniform pore openings, aroused a worldwide resurgence in this field. This is not only because it has brought about a series of novel mesoporous materials with various compositions which may find applications in catalysis, adsorption, and guest−host chemistry, but also it has opened a new avenue for creating zeotype materials. This paper presents a comprehensive overview of recent advances in the field of MCM-41. Beginning with the chemistry of surfactant/silicate solutions, progresses made in design and synthesis, characterization, and physicochemical property evaluation of MCM-41 are enumerated. Proposed formation mechanisms are presented, discussed, and identified. Potential applications are reviewed and projected. More than 100 references are cited.
X S Zhao - One of the best experts on this subject based on the ideXlab platform.
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advances in mesoporous molecular sieve mcm 41
Industrial & Engineering Chemistry Research, 1996Co-Authors: X S Zhao, G Q Lu, Graeme J MillarAbstract:The discovery of mesoporous molecular sieves, MCM-41, which possesses a Regular Hexagonal Array of uniform pore openings, aroused a worldwide resurgence in this field. This is not only because it has brought about a series of novel mesoporous materials with various compositions which may find applications in catalysis, adsorption, and guest−host chemistry, but also it has opened a new avenue for creating zeotype materials. This paper presents a comprehensive overview of recent advances in the field of MCM-41. Beginning with the chemistry of surfactant/silicate solutions, progresses made in design and synthesis, characterization, and physicochemical property evaluation of MCM-41 are enumerated. Proposed formation mechanisms are presented, discussed, and identified. Potential applications are reviewed and projected. More than 100 references are cited.
G Q Lu - One of the best experts on this subject based on the ideXlab platform.
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advances in mesoporous molecular sieve mcm 41
Industrial & Engineering Chemistry Research, 1996Co-Authors: X S Zhao, G Q Lu, Graeme J MillarAbstract:The discovery of mesoporous molecular sieves, MCM-41, which possesses a Regular Hexagonal Array of uniform pore openings, aroused a worldwide resurgence in this field. This is not only because it has brought about a series of novel mesoporous materials with various compositions which may find applications in catalysis, adsorption, and guest−host chemistry, but also it has opened a new avenue for creating zeotype materials. This paper presents a comprehensive overview of recent advances in the field of MCM-41. Beginning with the chemistry of surfactant/silicate solutions, progresses made in design and synthesis, characterization, and physicochemical property evaluation of MCM-41 are enumerated. Proposed formation mechanisms are presented, discussed, and identified. Potential applications are reviewed and projected. More than 100 references are cited.
Huey W Huang - One of the best experts on this subject based on the ideXlab platform.
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Crystallization of Antimicrobial Pores in Membranes:
2013Co-Authors: Lin Yang, Thomas M Weiss, Robert I Lehrer, Huey W HuangAbstract:ABSTRACT Membrane pores spontaneously formed by antimicrobial peptides in membranes were crystallized for the first time by manipulating the sample hydration and temperature. Neutron diffraction shows that magainins and protegrins form stable pores in fully hydrated fluid membranes. At lower hydration levels or low temperature, the membrane multilayers crystallize. In one crystalline phase, the pores in each bilayer arrange in a Regular Hexagonal Array and the bilayers are stacked into a Hexagonal ABC lattice, corresponding to the cubic close-packed structure of spheres. In another crystalline phase, the bilayers are modulated into the rippled multilamellae, corresponding to a 2D monoclinic lattice. The phase diagrams are described. Crystallization of the membrane pores provides possibilities for diffraction studies that might provide useful information on the pore structures
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crystallization of antimicrobial pores in membranes magainin and protegrin
Biophysical Journal, 2000Co-Authors: Lin Yang, Thomas M Weiss, Robert I Lehrer, Huey W HuangAbstract:Membrane pores spontaneously formed by antimicrobial peptides in membranes were crystallized for the first time by manipulating the sample hydration and temperature. Neutron diffraction shows that magainins and protegrins form stable pores in fully hydrated fluid membranes. At lower hydration levels or low temperature, the membrane multilayers crystallize. In one crystalline phase, the pores in each bilayer arrange in a Regular Hexagonal Array and the bilayers are stacked into a Hexagonal ABC lattice, corresponding to the cubic close-packed structure of spheres. In another crystalline phase, the bilayers are modulated into the rippled multilamellae, corresponding to a 2D monoclinic lattice. The phase diagrams are described. Crystallization of the membrane pores provides possibilities for diffraction studies that might provide useful information on the pore structures.
Alexander V Neimark - One of the best experts on this subject based on the ideXlab platform.
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characterization of micro and mesoporosity in sba 15 materials from adsorption data by the nldft method
Journal of Physical Chemistry B, 2001Co-Authors: Peter I Ravikovitch, Alexander V NeimarkAbstract:SBA-15 siliceous materials templated using triblock copolymers have recently received considerable attention because of their potential applications in catalysis and separations of large molecules. SBA-15 materials possess a Regular Hexagonal Array of cylindrical channels of 5−30 nm in diameter and, unless specially treated, an appreciable volume of intrawall pores which may constitute up to 30% of the total porosity. The intrawall pores include micropores within the silica matrix and also mesopores that are narrower than the main channels. We present a consistent method for evaluating the pore structure parameters of SBA-15 materials from the nitrogen adsorption isotherms. The proposed method is based on the nonlocal density functional theory (NLDFT) of adsorption and capillary condensation in cylindrical pores. The NLDFT method allows one to calculate the mesopore size distribution and to evaluate the pore wall thickness and the amount of intrawall porosity. The structural parameters obtained by the NLD...