Chinese Academy of Sciences

Bing Li

Zhongmin Liu

Weimin Liu

Lei Liu

Peng Fei Tian

Mao Ye

Xiangao Wang

Changqing He

Qiang Xue

Miao Yang

Yong Wan

Xiaobo Wang

Lin Liu

Yue Qi

Zhixiang Chen

Shiyun Sang

Mingzhi Li

Gaiqing Zhao

Zhidong Zhang

Ruiqi Song

Yingxu Wei

Xinde Sun

An ambient temperature barocaloric refrigerating machine has a high-precision high-pressure electric injection pump, a barocaloric element, heat exchange fluid, a cold end heat exchanger and a hot end heat exchanger. The phenomena of heat release after pressurization and heat absorption after depressurization are generated due to phase change through a barocaloric medium under the action of the high-pressure injection pump. The heat exchange fluid flows back and forth between the barocaloric refrigerators and exchanges heat and cold. The high-precision high-pressure electric injection pump provides pressure for the barocaloric refrigeration cycle. The pressurization oil is also used as the heat exchange fluid and in direct contact with a sample. Pressure-driven heat and cold are directly brought into the hot end heat exchanger and the cold end heat exchanger to complete the cycle, thereby reducing the heat loss.

Ambient temperature barocaloric refrigerating machine based on barocaloric effect

An oil-soluble conductive agent and a preparation method therefor. Raw materials for preparing the oil-soluble conductive agent comprise the following components: 20 parts by weight of ethyl caprate or bis(2-ethylhexyl) sebacate, 1.8-2.2 parts by weight of ethyl methyl carbonate, and 2-8 parts by weight of fluorine-containing ion salt; and the fluorine-containing ion salt is selected from one or more of lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, and lithium tetrafluoroborate. The oil-soluble conductive agent is apparently a colorless transparent liquid at 25° C. or higher, and the conductivity at 25° C. reaches 1×10S/cm. The oil-soluble conductive agent can be completely dissolved in a base oil and improve the conductivity thereof, so as to have the effects of arc suppression, being anti-static, cooling, heat transfer, and conduction.

Oil-soluble conductive additive and preparation method therefor

A flexible gastight material for a landfill site includes a component A and a component B, the component A including: at least one of polypropylene glycol with a molecular weight of 600-4000, polytetrahydrofuran diol with a molecular weight of 1000-3000, polycaprolactone diol with a molecular weight of 1000-3000, and polycarbonate diol with a molecular weight of 1000-3000; and at least one of 2,4'-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate. The flexible gastight material for the landfill site provided in the present application has a micro-closed-cell foam structure. The closed-cell elastic structure of the flexible gastight material may block the volatilization of toxic and harmful odors, and may cut off the diffusion path of the odors by combining with gas treatment systems at the landfill site. The flexible gastight material has excellent water blocking and gas sealing performance.

Flexible gastight material for landfill site, and preparation method and use method thereof

The present application discloses a catalyst, the catalyst contains a molecular sieve, there is at least one-dimension 8-membered ring channel in the molecular sieve structure, the diameter of a diffusible substance in the direction of the 8-membered ring channel is no less than 2.0 &#x212b;, the diameter of a substance that can be accommodated in the molecular sieve structure is no more than 6 &#x212b;; the catalyst is used for a methanol and/or dimethyl ether to propylene reaction, comprising contacting methanol and/or dimethyl ether with a methanol-to-propylene catalyst to obtain propylene.

Molecular sieve catalyst, preparation method therefor and application thereof

The present invention provides a process for methanol coupled catalytic cracking reaction of naphtha using a modified ZSM-5 molecular sieve catalyst, comprising performing a co-feeding reaction of methanol and naphtha on the modified ZSM-5 molecular sieve catalyst to produce low carbon olefins and/or aromatic hydrocarbons. In the process, the modified ZSM-5 molecular sieve catalyst comprises, in term of weight percent, 25-80 wt % of a ZSM-5 molecular sieve, 15-70 wt % of a binder, and 2.2-6.0 wt % of lanthanum and 1.0-2.8 wt % of phosphorus loaded on the ZSM-5 molecular sieve. The naphtha comprises 63.8-89.5 wt % of saturated chain alkanes and 5.6-29.8 wt % of cyclic alkanes. The naphtha and methanol concurrently pass through the catalyst bed, which are reacted during contacting with the catalyst under a reaction condition of a reaction temperature of 550-670&#xb0; C., a mass ratio of methanol to naphtha of 0.05-0.8, and a total mass space velocity of naphtha and methanol of 1.0-5 h.

Process for methanol coupled catalytic cracking reaction of naphtha using a modified ZSM-5 molecular sieve catalyst

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Dalian, China

Bing Li