Molecular Sieve
Molecular Sieve Adsorbents
... Molecular sieve adsorbents are crys- talline alumino-silicates known as zeolites. Their unique structure allows the water of crystallization to be removed, leaving a porous crystalline structure. These ...
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Experiment research on the technologies of heat treatment, recycling and regeneration of SF6 molecular sieve adsorbent
... for desorption. Therefore, this method has its own limitations. Microwave radiation is a new-type of generation which has been studied widely but used less in practice. Solvent regeneration has a low efficiency, and it ...
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Molecular sieve dehydration: a major development in the field of ethanol dehydration to produce fuel ethanol
... The rigorous study of earlier two processes reveals that neither MPRD nor MSDH is capable of producing the purely anhydrous ethanol from fermented wash. MPRD is capable of recovering ethanol from fermented wash but ...
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Spray-dried powders enhance vaginal siRNA delivery by potentially modulating the mucus molecular sieve structure
... Abstract: Vaginal small interfering RNA (siRNA) delivery provides a promising strategy for the prevention and treatment of vaginal diseases. However, the densely cross-linked mucus layer on the vaginal wall severely ...
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DESIGN, SYNTHESIS AND CHARACTERIZATION OF ZEOLITES AND MESOPOROUS MOLECULAR SIEVE CATALYSTS FOR SELECTIVE SYNTHESIS OF HETEROCYCLIC DRUG INTERMEDIATES
... of molecular sieve catalysts for the synthesis of drug intermediates through cyclization reactions and eco-friendly methodology for protection of alcohols, an important step for synthesis of complex drug ...
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Supercritical Adsorption Based CO2 Capture from N2/CO2 Mixture by Activated Carbon and Carbon Molecular Sieve
... Yigao-A was provided by Shanxi Yigao Coal-Bed-Methane Company, the carbon molecular sieve CMS-200 was from Dalian Haixin Chemical Company. The adsorbent samples were pretreated to dry at 423.15 K for at ...
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A Pervaporation Study of Ammonia Solutions Using Molecular Sieve Silica Membranes
... current molecular sieve silica membranes, hydrothermal treatment (long exposure to a hot water environment) was reported to be effective in modifying the silica pore structure to a desired level [34]; the ...
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The Role of Ethanol, Methyltriphenylphosphonium Bromide and Cetyltrimethylammonium Bromide as Directing Agents in Hydrothermal Synthesis of Aluminosilicate Molecular Sieve (ZSM-5) and Its Morphologies
... The use of organic species as templates in the synthesis of aluminosilicate, aluminophosphate, silicoaluminophosphate, metaloaluminophosphate and many different molecular sieve materials has grown in the ...
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Synthesis of NbFAPO 5 and NbFAPSO 5 Molecular Sieve by Hydrothermal Method and Comparison of Their XRD Patterns and Their Acidic Properties Evaluation by Infrared Spectroscopy
... Mesoporous molecular sieves, NbFAPO-5 and NbFAPSO-5 were hydrothermally synthesized with AlPO-5 type ...these molecular sieves was performed by X-ray diffrac- tion to determine their structure, ICP-EAS for ...
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Mixed Matrix Carbon Molecular Sieve and Alumina (CMS-Al₂O₃) Membranes
... The loss of separation performance for the membrane carbonised at 800 °C is directly related to the CMS mes- oporous structures as seen in Fig. 2b, where the larger pore sizes 20 to 70 Å allowed for diffusion of the ...
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Ionothermal synthesis and characterization of CoAPO 34 molecular sieve
... aluminophosphate molecular sieve called as DNL-1 (with –CLO topology) [6] and 3D anionic aluminophosphate framework denoted as JIS-1 with an Al/P ratio of ...
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Studies on Molecular Sieve Crystallization and Heteroatomic Substitution
... The VPT 27 Al and 31 P spectra shown in Figure 3.6 display a slightly different pattern than the SAC, particularly in the dry-gel. The dominant peaks in these spectra are octahedral aluminum for the 27 Al spectrum and ...
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Molecular Sieve Synthesis Using Imidazolium Structure Directing Agents
... high-silica molecular sieve SSZ-70 is investigated through a guest/host study of imidazolium structure directing agents ...Additional molecular sieve phases observed in this guest/host study ...
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Platinum-Carbon Catalysts with Molecular Sieve Properties133-139
... groups available for the attachment of metal salts a high proportion would exist on external surface. Obviously, catalytic stereo-selectivity due to the molecular filter acti[r] ...
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Synthesis and Characterization of 4A Molecular Sieve from Clay
... clays as a source in the synthesis of aluminosilicate molecular sieves. Eventhough this experiment involves commercial value, there are less studies were conducted. Here for the first time we have carried out the ...
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Infrared Spectroscopic and Scanning Electron Microscopy Study of Ibuprofen Loading onto the Molecular Sieve Mesoporous Silica SBA-15 Material
... In this work, the nonionic triblock copolymer poly(ethylene oxide)-poly(propylene oxide)- poly(ethylene oxide) surfactant where named as Pluronic P123 with molecular weight up to 5800 have been used as a soft ...
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Discovery of the congenital nephrotic syndrome gene discloses the structure of the mysterious molecular sieve of the kidney
... the molecular structure of a porous ...actual molecular structure of the slit diaphragm is, as yet, unre- solved, it is precocious to speculate on a molecular assembly allowing change in the width of ...
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Synthesis and Characterization of Nanocrystalline ZSM-5 Molecular Sieve from Ethylene Diamine Template
... Nanocrystalline ZSM-5 zeolite from ethylene diamine template have been prepared and characterized using XRD, TEM, TG/DTA, FT-IR, Nitrogen adsorption, XPS, MASNMR techniques and methanol[r] ...
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The Multiple Number Field Sieve with Conjugation Method
... In the medium characteristic case, i.e. when 1/3 ⩽ l p ⩽ 2/3, the polynomial selection of the classical Number Field Sieve allows to construct two polynomials with same degrees and same sizes of coefficients. ...
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An Expert System for Improving Sieve Calibration Process
... each sieve using a profile projector and conduct calibration tests using glass sphere, however the second way doesn’t have the same precision as the first one, because in the first it’s possible to measure the ...
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