다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

Crystalline metal-organic frameworks (MOFs) are formed by reticular synthesis, which creates strong bonds between inorganic and organic units. Careful selection of MOF constituents can yield crystals of ultrahigh porosity and high thermal and chemical stability. These characteristics allow the interior of MOFs to be chemically altered for use in gas separation, gas storage, and catalysis, among other applications. The precision commonly exercised in their chemical modification and the ability to expand their metrics without changing the underlying topology have not been achieved with other solids. MOFs whose chemical composition and shape of building units can be multiply varied within a particular structure already exist and may lead to materials that offer a synergistic combination of properties.

The Chemistry and Applications of Metal-Organic Frameworks

Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

A critical review of the emerging field of MOF-based catalysis is presented. Discussed are examples of: (a) opportunistic catalysis with metal nodes, (b) designed catalysis with framework nodes, (c) catalysis by homogeneous catalysts incorporated as framework struts, (d) catalysis by MOF-encapsulated molecular species, (e) catalysis by metal-free organic struts or cavity modifiers, and (f) catalysis by MOF-encapsulated clusters (66 references).

Metal–organic framework materials as catalysts

http://pubs.acs.org/doi/pdf/10.1021/cr300014x

Introduction to Metal–Organic Frameworks

Catalysis by Gold(I) and Gold(III): A Parallelism between Homo‐ and Heterogeneous Catalysts for Copper‐Free Sonogashira Cross‐Coupling Reactions

The new hybrid inorganic−organic polymer In2(OH)3[O4C8H4]1.5 has been hydrothermally obtained. Conditions for the synthesis are reported. The crystal structure of this material has been established...

In2(OH)3(BDC)1.5 (BDC = 1,4-Benzendicarboxylate): An In(III) Supramolecular 3D Framework with Catalytic Activity

Layered Rare‐Earth Hydroxides: A Class of Pillared Crystalline Compounds for Intercalation Chemistry

Four novel metal-organic frameworks (MOFs) [In(BDC)1.5(bipy)] (1), [In2(OH)2(BDC)2(phen)2] (2), [In(BTC)(H2O)(bipy)] (3), and [In(BTC)(H2O)(phen)] (4) (BDC = 1,4-benzendicarboxylic acid, BTC = 1,3,5-benzenetricarboxylic acid, bipy = 2,2‘-bipyridyl, phen = o-phenantroline) were synthesized and their structures were determined by X-ray single-crystal diffraction. Structurally speaking we can conclude that while the metal/connector/chelate rate is 1:1:1, the introduction of a chelate ligand, such as bipy or phen, blocks the possibility of connections in one direction, inducting the formation of 2D structures. In the case of compound 1, the extra one-half of BDC ligand per indium favors the eight coordination of the metal and drives the formation of a catenated 3D structure. Topological studies on the four compounds show one inclined catenation of hexagonal layers for 1 and three interdigitated layered structures with 2D topologies of type (44), (63), and (4.82) for 2, 3, and 4 compounds, respectively. Three ...

Novel 2D and 3D Indium Metal-Organic Frameworks: Topology and Catalytic Properties†

By using the bent linker 4,4′-(hexafluoroisopropylidene)bis(benzoic acid) (H2hippb), whose central atom is an sp3 carbon, a new In(III) MOF has been obtained. The structure is described as thick layers with the bent geometry of the ligand leading to the formation of square-shaped channels, which run inside the framework layers. This microporous, thermally stable compound has been proved to be an efficient heterogeneous catalyst for acetalization of aldehydes. Differences in the catalytic activity when a compound with empty or filled channels is used demonstrate that the catalytic reactions take place inside the pores.

Marta Iglesias

Papers

Catalysis by Gold(I) and Gold(III): A Parallelism between Homo‐ and Heterogeneous Catalysts for Copper‐Free Sonogashira Cross‐Coupling Reactions

In2(OH)3(BDC)1.5 (BDC = 1,4-Benzendicarboxylate): An In(III) Supramolecular 3D Framework with Catalytic Activity

Layered Rare‐Earth Hydroxides: A Class of Pillared Crystalline Compounds for Intercalation Chemistry

Novel 2D and 3D Indium Metal-Organic Frameworks: Topology and Catalytic Properties†

An Indium Layered MOF as Recyclable Lewis Acid Catalyst