Transition metal tetracyano complexes, their thermal and sorption properties

1986 ◽  
Vol 51 (3) ◽  
pp. 526-538 ◽  
Author(s):  
Anna Sopková ◽  
Michal Šingliar
Keyword(s):  
Organic Compound ◽  
Transition Metal ◽  
Guest Molecule ◽  
Sorption Properties ◽  
Organic Substances ◽  
Hydrated Form ◽  
Complex Lattice ◽  
Lattice Space ◽  
Tetracyano Complexes

The possibility of resorption of a guest molecule (G) or its substitution by other compounds is not known for M(NH3)2N(CN)4.2G (G = C6H6) or M(en)mM'(CN)4.nG clathrates, or even for the parent M(NH3)mM'(CN)4.nH2O, MM'(CN4).nH2O tetracyano complexes. These, however, are capable of sorption, and their lattice space can be reversibly or irreversibly filled with a suitable organic compound if the clathrates or tetracyano complexes in the hydrated form are allowed to be in contact with organic substances whose size and polarity fit the tetracyano complex lattice. The space within the lattice, however, develops as early as their formation from solution or suspension in the presence of the compound G (presence of water is actually sufficient).

Sorption properties of biofilms

1998 ◽  
Vol 37 (4-5) ◽  
pp. 207-210 ◽  
Author(s):  
R. Späth ◽  
H.-C. Flemming ◽  
S. Wuertz
Keyword(s):  
Heavy Metals ◽  
Cell Walls ◽  
Extraction Method ◽  
Extracellular Polymeric Substances ◽  
Total Content ◽  
Sorption Properties ◽  
Biological Wastewater Treatment ◽  
Organic Substances ◽  
Inorganic Substances ◽  
Dissolved Matter

The distribution and fate of pollutants in biological wastewater treatment is highly influenced by sorption processes. Biofilms can provide a sink for dissolved matter with extracellular polymeric substances (EPS), cell walls, cell membranes, and cytoplasm serving as sorption sites. These sites display different sorption properties, preferences, and capacities. The distribution of organic pollutants such as BTX or heavy metals such as cadmium and zinc in biofilms could be investigated by fractionating the biomass. Therefore, an EPS extraction method with a crown ether was used which allowed the detection of organic and inorganic substances in the different fractions. After extraction, more than 60% of BTX could be localized in the EPS In contrast to organic substances, more than 80% of the total content of cadmium and zinc was found in the cellular fraction.

Clathrates of tetracyanonickelates containing 1,4-dioxane

1987 ◽  
Vol 52 (12) ◽  
pp. 2890-2899 ◽  
Author(s):  
Mária Reháková ◽  
Anna Sopková
Keyword(s):  
Guest Molecule ◽  
Solid Product ◽  
Gc Analysis ◽  
Preparation Conditions ◽  
Direct Addition ◽  
Similar Product ◽  
Host Structure ◽  
Tetracyano Complexes

It was found after study of modifications of tetracyano complexes with 1,4-dioxane that a similar product is formed also by direct addition of 1,4-dioxane to a solution of [Ni(NH3)m][Ni(CN)4] or to solid NiNi(CN)4.nH2O; and 1,4-dioxane is initially bonded as a guest molecule and then as a ligand. The amount of guest component or ligand in the compounds Ni(NH3)m(C4H8O2)aNi(CN)4.(y-a)C4H8O2.nH2O and Ni(C4H8O2)aNi(CN)4.(n-a)C4H8O2 depends on the preparation conditions and on the conditions of storage of the solid product after isolation. The results of TA, IR, and GC analysis confirmed the presence of 1,4-dioxane bonded as a guest component and also 1,4-dioxane entering the host structure as a ligand.

Effect of Transition Metal Fluorides on the Sorption Properties and Reversible Formation of Ca(BH4)2

2011 ◽  
Vol 115 (5) ◽  
pp. 2497-2504 ◽  
Author(s):  
Christian Bonatto Minella ◽  
Sebastiano Garroni ◽  
Claudio Pistidda ◽  
R. Gosalawit-Utke ◽  
Gagik Barkhordarian ◽  
...  
Keyword(s):  
Transition Metal ◽  
Sorption Properties ◽  
Metal Fluorides ◽  
Reversible Formation ◽  
Transition Metal Fluorides

VOC Decomposition by Photocatalytic Wall Paper

2006 ◽  
Vol 510-511 ◽  
pp. 22-25 ◽  
Author(s):  
Hiroshi Taoda ◽  
Mitsuharu Fukaya ◽  
Eiji Watanabe ◽  
Kazuhiko Tanaka
Keyword(s):  
Carbon Dioxide ◽  
Organic Compound ◽  
Volatile Organic Compound ◽  
Organic Substances ◽  
Fluorescent Lamp ◽  
Oxidative Potential ◽  
Volatile Organic ◽  
Sick House Syndrome ◽  
Almost All ◽  
Bacterial Effect

Sick house syndrome caused by volatile organic compound (VOC) in the room is a serious problem in Japan. A photocatalytic wall paper was developed which is a wall paper coated with a visible light type of photocatalyst. When irradiated by light, the photocatalyst generates strong oxidative potential and decomposes almost all organic substances to water, carbon dioxide, and others. As a result of our experiment using the photocatalytic wall paper, toluene and acetaldehyde were decomposed efficiently even under a fluorescent lamp, and the photocatalytic wall paper had also strong anti-bacterial effect under the fluorescent lamp.

scholarly journals Synthesis and Applications of New Spin Crossover Compounds

Crystals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 382 ◽  
Author(s):  
Takafumi Kitazawa
Keyword(s):  
Electromagnetic Field ◽  
Transition Metal ◽  
Guest Molecule ◽  
Spin Crossover ◽  
Nuclear Decay ◽  
Stable States ◽  
Molecular Switching ◽  
X Ray ◽  
Field Radiation ◽  
External Stimuli

The spin crossover (SCO) between multi-stable states in transition metal material is one of the attractive molecular switching phenomena which is responsive to various external stimuli such as temperature, pressure, light, electromagnetic field, radiation, nuclear decay, soft-X-ray, guest molecule inclusion, chemical environments and so forth [...]

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