4751-07-9

Upstream product

• 142-44-9 maleate dianion 
• 110-16-7 maleic acid 
• 110-17-8 (2E)-but-2-enedioic acid 
• 544-19-4 copper(II) formate 
• 22548-52-3 copper(II) maleate monohydrate 

Relevant academic research and scientific papers

Synthesis method of columnar copper fumarate with double-enzyme activity

The invention belongs to the field of preparation of nano functional materials, and particularly relates to a synthesis method of columnar copper fumarate with double-enzyme activity. The columnar copper fumarate is synthesized through a hydrothermal synthesis method. The obtained columnar copper fumarate nano material has the advantages of being good in dispersity, high in catalytic property, good in stability and the like, not only has peroxidase activity under the condition that the pH value is 4.0, but also has laccase activity under the condition that the pH value is 8.0. According to the invention, the biomimetic activity of the columnar copper fumarate is utilized, and the columnar copper fumarate is applied to epinephrine and glucose detection under different acid-base conditions.

Thermal studies of copper(II) fumarate and copper(II) terephthalate

Copper(II) fumarate (Cu(OOCC2H2COO)) and copper(II) terephthalate (Cu(OOCC6H4COO)) have been synthesized. Their heat capacity has been measured by adiabatic calorimetry between 13 and 300 K and their magnetic susceptibility determined with a SQUID magnetometer between 5 and 300 K. No phase transition has been observed in the whole temperature range covered by the experiments. The thermodynamic properties of these compounds are compared with those of copper(II) trans-1,4-cyclohexane dicarboxylate, in which a structural first-order phase transition was observed at 160 K.

Microporous materials of metal carboxylates

Copper(II) terephthalate absorbs a large amount of gases such as N2, Ar, O2, and Xe. The maximum amounts of absorption of gases were 1.8, 1.9, 2.2, and 0.9 mole per mole of the copper(II) salt for N2, Ar, O2, and Xe, respectively, indicating that the gases were not adsorbed on the surface but occluded within the solid. Other microporous copper(II) dicarboxylates are also reviewed. The porous structure of copper(II) terephthalate, in which the gas is occluded, is deduced from the temperature dependence of magnetic susceptibilities and the linear structure of terephthalate. Microporous molybdenum(II) and ruthenium(II, III) dicarboxylates are discussed. We describe that rhodium(II) monocarboxylate bridged by pyrazine form stable micropores by self-assembly of infinite linear chain complexes. (C) 2000 Academic Press.

Gas storage apparatus, gaseous fuel automobile using the gas storage apparatus, gas storage method and methane adsorbing-retaining agent

A gas storage apparatus for use in storing a gas including methane as a main component thereof is disclosed. The apparatus includes an entrance/exit opening for allowing entrance or exit therethrough of a gas to be stored, a gas-tight maintaining mechanism capable of maintaining the gas under a pressurized state inside a container, and a pressure vessel which may be constantly maintained at a normal temperature. The pressure vessel accommodates therein an organometallic complex having a one-dimensional channel structure.

Preparation, structure and thermal properties of a zinc copper maleate precursor Cu0.06Zn0.94C4O4H 2·2H2O

A new Cu-Zn bimetallic precursor Cu0.06Zn0.94C4O4H 2·2H2O useful as a model catalyst for methanolation of syngas was prepared and identified. It crystallises in the monoclinic space group Cc with cell parameters a = 5.725(1), b = 16.251(2), c = 6.825(1) A, β = 90.72(1)°, Z = 4. The structure analysis shows a two-dimensional polymeric structure with layers containing metal atoms interconnected by tridentate maleate anions. The smallest ring in the layer contains 18 atoms among which are three metal atoms. These metal atoms are connected by two maleate ligands through the opposite carboxylic groups and the ring is completed by one syn-anti carboxylate bridge Zn-O-C-O-Zn. The metal atom is five-co-ordinated in the MO2O3 form through three oxygen atoms from three different maleate anions and two terminal water ligands. The packing of the structure is stabilised by intra- and inter-layer hydrogen bonds. Thermal decomposition begins with dehydration (75-170°C) followed by decomposition of the maleate anions (190-635°C). As final phases, zincite ZnO (major) and tenorite CuO (minor) were identified.