Two isostructural nanocage-based porous Ni/Co(II)-MOFs have been hydrothermally synthesized, which were interestingly composed of icosahedron and tetrahedron cages with a new (3,8)-connected 3D topology. Moreover, the stable Ni-MOF exhibits good selective CO2/CH4 and CO2/N2 adsorption owing to its exposed nitrogen active sites.

Nanocage-Based Porous Metal-Organic Frameworks Constructed from Icosahedrons and Tetrahedrons for Selective Gas Adsorption.

The invention relates to power-assisted steering oil. The power-assisted steering oil is mainly used for solving the problem of continual faults because the existing No.6 and No.8 hydraulic drive liquid and ATF (automatic transmission fluid) which are used for replacing the power-assisted steering oil are not designed according to the use environment and working conditions. The power-assisted steering oil is prepared from the following components in percentage by weight: 94.36 to 95.005% of base oil, 3.5 to 3.9% of viscosity index modifier, 0.5 to 0.7% of pour point depressant, 0.06 to 0.11% of cleaner, 0.08 to 0.1% of antirust agent, 0.41 to 0.6% of extreme-pressure antiwear agent, 0.06 to 0.11% of antioxidant, 0.04 to 0.06% of metal deactivator, 0.05 to 0.07% of oxidation and corrosion inhibitor, 0.13 to 0.2% of dispersant, and 0.005% of antifoaming agent. The power-assisted steering oil has the advantages that the low-temperature fluidity and viscosity-temperature property are very excellent, and the antifoaming property is good.

Power-assisted steering oil composition

Two new coordination polymers have been prepared from 1,2,3,4-tetra-(4-pyridyl)-butane (TPB) with Pb(II) and Cd(II) ions, [Pb2(NO3)6(OCH3)2(TPB-2H)2]n (1) {[Cd(TPB)(H2O)2](NO3)2(H2O)4(CH3OH)2}
 n
 (2), and structurally characterized. The crystal structure analyses of prepared compounds showed that metal ion type has an essential role in their crystal structure and coordination type of TPB ligand. In compound 1, the TPB ligand by accepting a linear bridging mode leads to the formation of a 1D chain. Compound 2 displays a 2D infinite layer framework connected by TPB, which acts as a four connector. The study of thermal behavior of prepared compounds showed that structure and metal ion type of coordination compounds are influential on their thermal stability. The investigation of optical properties of compounds demonstrated that the altering of metal ion type in the structure of coordination compounds can be used to tune their photophysical properties.

Effect of metal ion type on the structure and optical properties of coordination polymers of 1,2,3,4-tetra-(4-pyridyl)-butane

The invention discloses an automobile brake fluid comprising the following raw materials by weight: 40-60 parts of diethylene glycol butyl ether, 15-30 parts of propylene glycol, 25-35 parts of polyethylene glycol monoether, 5-8 parts of boric acid, 0.03-0.12 part of benzotriazole, 0.05-0.10 part of zinc dialkyl dithiocarbamate, 0.10-0.18 part of antioxidant 264, 0.05-0.08 part of triethanolamine, 0.15-0.25 parts of borax and 1.2 - 2.6 parts of a PH regulator. The present invention also provides a preparation method of the automobile brake fluid. Through cooperation of the benzotriazole, the zinc dialkyl dithiocarbamate, and the antioxidant 264, the anti-oxidation performance of the automobile brake fluid can be significantly improved, and the automobile brake fluid is in line with the GB 12981 quality indicators, and works well. The high temperature anti-gas-resistance, corrosion resistance, high temperature stability, chemical stability and evaporation loss and the like of the automobile brake fluid all reach HZY5 standards.

Automobile brake fluid and preparation method thereof

A reaction apparatus and application thereof in synthesizing borate relate to a reaction apparatus. The reaction apparatus is provided with a preheater, a reactor, a product tank, a condenser, a byproduct tank and a vacuum system, wherein the outlet of the preheater is connected with the inlet of the reactor through a first valve; the first outlet of the reactor is connected with the product tank through a second valve; the second outlet of the reactor is connected with the inlet of the condenser; and the outlet of the condenser is connected with the byproduct tank; the preheater is connected with the vacuum system through a third valve, and the byproduct tank is connected with the vacuum system through a fourth valve. The method applying the reaction apparatus to synthesize borate comprises: reaction raw materials are firstly preheated in the preheater; and the raw materials in the preheater are continuously conveyed to the reactor by way of a liquid pump, a pressure difference or a potential difference, a feed liquid is dispersed on a heating plate in the reactor through a reaction liquid distributor to form a liquid thin film, a reaction byproduct is continuously output at the tail end outlet of the reactor and is collected in the product tank, and the byproduct is extracted from the top of the reactor and enters into the byproduct tank.

Reaction apparatus and application thereof in synthesizing borate

Method for preparing borate synthetic brake fluid

Synthesis and structure of Pb13Na(μ3-O)(μ3-OH)(BDC)12: A holodirected/hemidirected mixed Pb–Na heterometal coordination polymer with Pb12O20 cage

The method discloses a method for preparing spherical poly-2,6-dimethyl-p-phenylene particles, and belongs to the field of a polymer forming technique. The method comprises steps as follows: a good solvent of poly-2,6-dimethyl-p-phenylene is mixed with a poor solvent to form a poly-2,6-dimethyl-p-phenylene suspension liquid, then the suspension liquid is added to a hardening solvent for hardening treatment to obtain precipitation, the precipitation is filtered and dried, and then the spherical poly-2,6-dimethyl-p-phenylene particles are obtained. With the adoption of the method, the spherical poly-2,6-dimethyl-p-phenylene particles can be prepared, the particle size is uniform, the yield is high and the utilization of the products is facilitated.

Method for preparing spherical poly-2,6-dimethyl-p-phenylene particles

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Method for preparing borate synthetic brake fluid

Synthesis and structure of Pb13Na(μ3-O)(μ3-OH)(BDC)12: A holodirected/hemidirected mixed Pb–Na heterometal coordination polymer with Pb12O20 cage

Method for preparing spherical poly-2,6-dimethyl-p-phenylene particles