نتایج جستجو برای: h2 separation

تعداد نتایج: 146783  

Journal: :Separation and Purification Technology 2022

Two-dimensional (2D) materials bring a great opportunity to fabricate molecular sieving membranes that can potentially break the permeability-selectivity trade-off. Although 2D laminar with interlayer nanochannels as channel were widely studied, for most of reported membranes, it is challenge highly ordered mass transport. Herein, we report novel kind black phosphorene membrane which made from ...

Journal: :iranian journal of hydrogen & fuel cell 2015
mohammad javad vaezi ali akbar babaluo

the main goal of this work was to synthesize and evaluate the effect of dehydration temperature on the potential application of hydroxy sodalite zeolite membrane. hydroxy sodalite zeolite membranes were synthesized via direct hydrothermal method onto a tubular alumina support without seeding in a hot air oven. the synthesized membranes were characterized by x-ray diffraction (xrd) and scanning ...

2007
ANDREW P. INGERSOLL

The effective temperature of Saturn from 30øS to 10øN is 96.5 + 2.5 K. This value is 1.9 K higher than our preliminary estimate (Ingersoll et al., 1980). The atmospheric mole fraction of H2 relative to H2 + He is 90 + 3%. This value is derived by comparing infrared and radio occultation data (Kliore et al., this issue) for the same latitude. The high value of the effective temperature suggests ...

Journal: :ACS applied materials & interfaces 2017
Bassem A Al-Maythalony Ahmed M Alloush Muhammed Faizan Hatim Dafallah Mohammed A A Elgzoly Adam A A Seliman Amir Al-Ahmed Zain H Yamani Mohamed A M Habib Kyle E Cordova Omar M Yaghi

Nanoparticles of zeolitic imidazolate framework-7 (nZIF-7) were blended with poly(ether imide) (PEI) to fabricate a new mixed-matrix membrane (nZIF-7/PEI). nZIF-7 was chosen in order to demonstrate the power of postsynthetic modification (PSM) by linker exchange of benzimidazolate to benzotriazolate for tuning the permeability and selectivity properties of a resulting membrane (PSM-nZIF-7/PEI)....

Journal: :Physical chemistry chemical physics : PCCP 2014
K Kugler B Ohs M Scholz M Wessling

Ammonia is exclusively synthesized by the Haber-Bosch process starting from precious carbon resources such as coal or CH4. With H2O, H2 is produced and with N2, NH3 can be synthesized at high pressures and temperatures. Regrettably, the carbon is not incorporated into NH3 but emitted as CO2. Valuable carbon sources are consumed which could be used otherwise when carbon sources become scarce. We...

Journal: :Journal of the American Chemical Society 2013
Stephen A FitzGerald Christopher J Pierce Jesse L C Rowsell Eric D Bloch Jarad A Mason

The quantum sieving effect between D2 and H2 is examined for a series of metal-organic frameworks (MOFs) over the temperature range 77-150 K. Isothermal adsorption measurements demonstrate a consistently larger isosteric heat of adsorption for D2 vs H2, with the largest difference being 1.4 kJ/mol in the case of Ni-MOF-74. This leads to a low-pressure selectivity for this material that increase...

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