187457_187457 - espace@Curtin
... thermodynamic instability [as seen in Ti(BH4)2 and Cu(BH4)2],9,10 and (3) release of highly dangerous or toxic by-products, such as BeH2, B2H6 [Be(BH4)2, Al(BH4)3 and Zn(BH4)2],11-13 have thus far limited their success as suitable hydrogen storage candidates. It has been shown that there are ways in ...
... thermodynamic instability [as seen in Ti(BH4)2 and Cu(BH4)2],9,10 and (3) release of highly dangerous or toxic by-products, such as BeH2, B2H6 [Be(BH4)2, Al(BH4)3 and Zn(BH4)2],11-13 have thus far limited their success as suitable hydrogen storage candidates. It has been shown that there are ways in ...
Nanoporous molecular crystals - ORCA
... major advances in the preparation of nanoporous materials using molecular components.7,8 For example, great interest has been generated by crystalline organic–inorganic hybrid materials, such as the Metal–Organic Frameworks (MOFs), also called Porous Coordination Polymers (PCPs).9–15 Nanoporous Mole ...
... major advances in the preparation of nanoporous materials using molecular components.7,8 For example, great interest has been generated by crystalline organic–inorganic hybrid materials, such as the Metal–Organic Frameworks (MOFs), also called Porous Coordination Polymers (PCPs).9–15 Nanoporous Mole ...
Hydrazine Borane and Hydrazinidoboranes as Chemical Hydrogen
... Nowadays, and in light of past experience, a new era must begin. The 21st century could be that of the hydrogen century. Hydrogen is attractive owing to abundance via various sources, high mass energy density (120 MJ/kg) and oxidation into water. However, the transition CxHy (≤25 wt% H) → H2 (100 wt ...
... Nowadays, and in light of past experience, a new era must begin. The 21st century could be that of the hydrogen century. Hydrogen is attractive owing to abundance via various sources, high mass energy density (120 MJ/kg) and oxidation into water. However, the transition CxHy (≤25 wt% H) → H2 (100 wt ...
Spillover in Heterogeneous Catalysis - ACS Publications
... effectively exchange of bonds between the adsorbed species and the surface, and allows the adsorbed species to reach an interface between the activating and the accepting surface. Spillover can take place from a metal to an oxide, from one metal to another,19 from one oxide to another,2O or from a m ...
... effectively exchange of bonds between the adsorbed species and the surface, and allows the adsorbed species to reach an interface between the activating and the accepting surface. Spillover can take place from a metal to an oxide, from one metal to another,19 from one oxide to another,2O or from a m ...
PDF 1095 KB
... hydrogen can be stored as a compressed gas under B35 MPa at room temperature with 15 g H2 per L. However, such an approach may not be cost effective because the resulting product will have a low energy density, and there are some safety issues. Therefore, considerable effort has been directed toward m ...
... hydrogen can be stored as a compressed gas under B35 MPa at room temperature with 15 g H2 per L. However, such an approach may not be cost effective because the resulting product will have a low energy density, and there are some safety issues. Therefore, considerable effort has been directed toward m ...
Chem Comm H stor Schroder
... Metal–organic co-ordination framework materials have attracted much attention in recent years due to their inherent design flexibility,1 and their potential to form stable, highly-porous scaffolds,2,3 which can be used for gas storage4 and for the adsorption of volatile organic compounds.5 In partic ...
... Metal–organic co-ordination framework materials have attracted much attention in recent years due to their inherent design flexibility,1 and their potential to form stable, highly-porous scaffolds,2,3 which can be used for gas storage4 and for the adsorption of volatile organic compounds.5 In partic ...
Aluminum Borohydride Complex with
... dehydrogenation temperatures of metal borohydrides usually happen at over 250 °C and produce impurity gases, such as diborane, together with hydrogen,11 which is inappropriate to be used in hydrogen fuel cell vehicles. To overcome the kinetic and thermodynamic limitations of the decomposition of met ...
... dehydrogenation temperatures of metal borohydrides usually happen at over 250 °C and produce impurity gases, such as diborane, together with hydrogen,11 which is inappropriate to be used in hydrogen fuel cell vehicles. To overcome the kinetic and thermodynamic limitations of the decomposition of met ...
Efficient purification of ethene by an ethane
... 150 trays, which is very energy consuming (7 GJ t 1) and constitutes a notable portion of the ethylene cost6,7. To save energy, separation methods effective at the ambient temperature and pressure are highly demanded8–11. Passing the gas mixture through a fixed-bed adsorber can be a very simple and ...
... 150 trays, which is very energy consuming (7 GJ t 1) and constitutes a notable portion of the ethylene cost6,7. To save energy, separation methods effective at the ambient temperature and pressure are highly demanded8–11. Passing the gas mixture through a fixed-bed adsorber can be a very simple and ...
Zeolite inclusion chemistry. Clusters, quantum dots, and polymers.
... Zeolites Inclusion Chemistry: Encapsulation Strategies The crystalline microporosity and well-defined internal surfaces of zeolites, in addition to their great chemical variety, make these materials very attractive hosts for many areas of inclusion chemistry. A brief overview of encapsulation strate ...
... Zeolites Inclusion Chemistry: Encapsulation Strategies The crystalline microporosity and well-defined internal surfaces of zeolites, in addition to their great chemical variety, make these materials very attractive hosts for many areas of inclusion chemistry. A brief overview of encapsulation strate ...
Full Text
... organic linkers have attracted increasing scientific interest during the past decade.[1] Their structure (especially their modularity) and properties (especially extra-large surface area) have made them an attractive class of porous materials for applications including gas purification and storage, ...
... organic linkers have attracted increasing scientific interest during the past decade.[1] Their structure (especially their modularity) and properties (especially extra-large surface area) have made them an attractive class of porous materials for applications including gas purification and storage, ...
View paper - Andrew J. Gellman Research Group
... are not likely to represent the structures of real surfaces. The ideal structure has single atom kinks with (110) structure separated by (100) step edges which are two atoms in length. At temperature above absolute zero atoms can diffuse across a real surface producing non-ideal structures as a res ...
... are not likely to represent the structures of real surfaces. The ideal structure has single atom kinks with (110) structure separated by (100) step edges which are two atoms in length. At temperature above absolute zero atoms can diffuse across a real surface producing non-ideal structures as a res ...
Adsorption and desorption
... (Review on water: M.A. Henderson, Surf. Sci. Reports 46 (2002) 1; calculations: A. Vittadini et al. Phys. Rev. B 52 (1995) 5885) ...
... (Review on water: M.A. Henderson, Surf. Sci. Reports 46 (2002) 1; calculations: A. Vittadini et al. Phys. Rev. B 52 (1995) 5885) ...
Topological studies of three related MOFs of Gd(III) and 5
... and luminescence (Black et al., 2009; Che et al., 2008; Yan et al., 2009). Secondary-building units (SBUs) are conceptual building elements used in the retrosynthetic analysis of MOFs. They can be thought of as formed in situ through a self-assembly process ( O'Keeffe et al., 2000; Rowsell & Yaghi, ...
... and luminescence (Black et al., 2009; Che et al., 2008; Yan et al., 2009). Secondary-building units (SBUs) are conceptual building elements used in the retrosynthetic analysis of MOFs. They can be thought of as formed in situ through a self-assembly process ( O'Keeffe et al., 2000; Rowsell & Yaghi, ...
Construction of Porous Solids from Hydrogen
... been widely used to construct extended organic solids possessing both condensed and open structures,4,5 strategies for their utility in assembling porous metal-organic frameworks remain, with the exception of few reports,5c,6 largely unexplored. Given that hydrogen-bonding interactions are attractiv ...
... been widely used to construct extended organic solids possessing both condensed and open structures,4,5 strategies for their utility in assembling porous metal-organic frameworks remain, with the exception of few reports,5c,6 largely unexplored. Given that hydrogen-bonding interactions are attractiv ...
Clean and Efficient Synthesis Using Mechanochemistry
... The quantitative reaction yields enabled the collection of high-quality PXRD data, suitable for the structural characterization of these previously not known materials.48 The formation of different zinc fumarate coordination polymers by grinding with a different liquid phase was subsequently rationa ...
... The quantitative reaction yields enabled the collection of high-quality PXRD data, suitable for the structural characterization of these previously not known materials.48 The formation of different zinc fumarate coordination polymers by grinding with a different liquid phase was subsequently rationa ...
Charge-Assisted Hydrogen-Bonded Networks of NH4+ and [Co
... crystals of formula NH4 (HO3 P-(C6 H4 )2 -COOH)(H2 O3 P-C6 H4 -C6 H4 -COOH) (1). The ammonium monohydrogenphosphonato-biphenyl-carboxylic acid crystallized with one molecule of the free H3 BPPA acid. The best results were obtained using a 1:1 ratio, though less ammonium acetate also led to product f ...
... crystals of formula NH4 (HO3 P-(C6 H4 )2 -COOH)(H2 O3 P-C6 H4 -C6 H4 -COOH) (1). The ammonium monohydrogenphosphonato-biphenyl-carboxylic acid crystallized with one molecule of the free H3 BPPA acid. The best results were obtained using a 1:1 ratio, though less ammonium acetate also led to product f ...
PHASE COMPOSITION AND MICROSTRUCTURE OF Ti-6Al
... nanocrystalline (NC) structure in metals and alloys have been intensively developed. First of all this is connected with the fact that SMC and NC metals and alloys possess unique physical and mechanical properties being essentially different from the relevant ones for materials with fine and coarse ...
... nanocrystalline (NC) structure in metals and alloys have been intensively developed. First of all this is connected with the fact that SMC and NC metals and alloys possess unique physical and mechanical properties being essentially different from the relevant ones for materials with fine and coarse ...
Solvothermal Synthesis of Multifunctional Coordination Polymers
... among the most effective and convenient routes under relatively mild conditions, in particular for the crystal growth of coordination polymers [32 – 34]. Solvothermal reactions involve the use of an organic or inorganic solvent at elevated temperature and autogeneous pressure in a sealed system (usu ...
... among the most effective and convenient routes under relatively mild conditions, in particular for the crystal growth of coordination polymers [32 – 34]. Solvothermal reactions involve the use of an organic or inorganic solvent at elevated temperature and autogeneous pressure in a sealed system (usu ...
Document
... architecture is challenging.14-17 Though the framework instability such as the collapse of the framework upon guest removal has been a serious shortcoming of these materials, the pioneering works of Yaghi and co-workers led to successful synthesis of metal organic frameworks with permanent porosity. ...
... architecture is challenging.14-17 Though the framework instability such as the collapse of the framework upon guest removal has been a serious shortcoming of these materials, the pioneering works of Yaghi and co-workers led to successful synthesis of metal organic frameworks with permanent porosity. ...
A New Synthetic Method for Nanoscale Metal-
... materials, from the naturally occurring porous inorganic materials, like activated carbon and zeolites, to the rationally designed Metal-Organic Frameworks (MOFs). From a historical perspective, activated carbons solids are considered the first porous materials. The first recorded application of cha ...
... materials, from the naturally occurring porous inorganic materials, like activated carbon and zeolites, to the rationally designed Metal-Organic Frameworks (MOFs). From a historical perspective, activated carbons solids are considered the first porous materials. The first recorded application of cha ...
Understanding Trends in CO2 Adsorption
... unsaturated metal centers have been observed to provide promising selectivity of CO2 over N2 and a high CO2 capacity at very low pressures,8 which is relevant for efficient gas separations from a postcombustion process. Improving CO2 capacity of these materials would be desirable, and a way to achieve ...
... unsaturated metal centers have been observed to provide promising selectivity of CO2 over N2 and a high CO2 capacity at very low pressures,8 which is relevant for efficient gas separations from a postcombustion process. Improving CO2 capacity of these materials would be desirable, and a way to achieve ...
Brønsted Acidity in Metal−Organic Frameworks
... they are obtained from a mixture of the guest molecules and the molecular building units needed for MOF synthesis. The guest molecules can be acidified after their inclusion to further increase the amount or strength of their Brønsted acidity. This approach enlarges the scope of Brønsted acidic guest ...
... they are obtained from a mixture of the guest molecules and the molecular building units needed for MOF synthesis. The guest molecules can be acidified after their inclusion to further increase the amount or strength of their Brønsted acidity. This approach enlarges the scope of Brønsted acidic guest ...
MOF-74 building unit has a direct impact on toxic gas
... All materials were stored in air prior to use. In most cases, breakthrough tests were run within the same month of synthesis of the MOF material. For the Zn analog, the testing was spread out over a period of 8 months after materials synthesis. For the Mg analog, most breakthrough testing was comple ...
... All materials were stored in air prior to use. In most cases, breakthrough tests were run within the same month of synthesis of the MOF material. For the Zn analog, the testing was spread out over a period of 8 months after materials synthesis. For the Mg analog, most breakthrough testing was comple ...
hydrogen storage
... atmospheric pressure, 1 kg of the gas has a volume of 11 m3. To increase hydrogen density, work must either be applied to compress the gas, the temperature decreased below the critical temperature, or the repulsion reduced by the interaction of hydrogen with another material. The second important cr ...
... atmospheric pressure, 1 kg of the gas has a volume of 11 m3. To increase hydrogen density, work must either be applied to compress the gas, the temperature decreased below the critical temperature, or the repulsion reduced by the interaction of hydrogen with another material. The second important cr ...
Construction of Two Microporous MetalOrganic Frameworks with flu
... mentioning that four adjacent Zn 6 (μ6 -O) clusters are connected by bridging TPO3− ligands to give a double-walled square cavity (Figure S9 in the SI). It is notable that in complex 2 there are 1D square channels with dimensions of approximately 6.5 Å × 6.5 Å along the b axis (Figure 2c). The desol ...
... mentioning that four adjacent Zn 6 (μ6 -O) clusters are connected by bridging TPO3− ligands to give a double-walled square cavity (Figure S9 in the SI). It is notable that in complex 2 there are 1D square channels with dimensions of approximately 6.5 Å × 6.5 Å along the b axis (Figure 2c). The desol ...