54results about How to "The process is easy to scale up" patented technology

Provided are a composite catalytic membrane for catalyzing an esterification reaction and a preparation method thereof. The composite catalytic membrane has a porous structure, with non-woven fabric as the base film, and a catalytic coating is compounded on the surface of the non-woven fabric and in the pores and gaps of the non-woven fabric fibers. The catalytic coating uses a solid acid as a catalyst to polymerize Compound or modified sulfonated polymer is used as film-forming material, and the film is formed by coating method or impregnation method, and after forming, it is cross-linked to obtain a composite catalytic membrane. Utilizing the microporous structure and developed specific surface of the composite catalytic membrane, the catalytic esterification and the greening and high efficiency of the biodiesel preparation process are realized. The composite catalytic membrane has high mechanical strength and good repetition stability, and is easy to realize the continuous production repetition of the catalytic esterification process. The preparation process is simple and easy to control and scale up.

The invention discloses a graphene three-dimensional material as well as a preparation method and an application thereof. The material consists of 10 to 99% of graphene and 1 to 90% of the oxide of manganese, nickel, iron or cobalt. The preparation method comprises the following steps: performing ultrasonic dispersion on graphite oxide to prepare a graphite oxide solution; adding a metal salt solution while stirring or under ultrasonic conditions, and adding a hydrazine hydrate solution; conducting reaction in a drying oven or a hydro-thermal reaction kettle; and then drying to obtain the graphene three-dimensional material. The graphene three-dimensional material is applied to a super capacitor with the capacity of 200 to 800 F / g, or used for making the cathode of a lithium ion battery with the capacity of 300 to 1,400 mAh / g. According to the invention, the preparation process is simple; the prepared graphene three-dimensional macroscopic material has high conductivity and strength; and when being used for the cathode of the lithium ion battery and the super capacitor, the material has high performance.

The invention belongs to the comprehensive field of potassium fertilizer production and CO2 emission reduction, and provides a method for concurrent production of potassium chloride and mineralization fixation of CO2. The process steps comprise: (1) adopting potassium feldspar, calcium chloride and coal as raw materials, preparing materials, carrying out ball milling, and carrying out pressing molding or pelletizing; (2) conveying the molded material or the material balls into a rotary kiln from the kiln tail, conveying air into the rotary kiln from the kiln head, and controlling a residence time of the molded material or the material balls at a temperature range of 800-1000 DEG C to 20-40 min; (3) crushing the calcinated material, and adding water to carry out potassium leaching through the water; (4) adding water to the potassium leaching residue to carry out pulp conditioning, and introducing CO2 to carry out a mineralization reaction; (5) carrying out returning of the potassium leaching solution so as to be used for leaching of potassium from the calcinated material when the Baume degree of the potassium leaching solution is less than or equal to 29, and carrying out evaporation concentration on the potassium leaching solution to achieve the Baume degree of 42-42.5 when the Baume degree of the potassium leaching solution is more than 29, and cooling to carry out potassium chloride crystallization; and (6) cooling the potassium extraction mother liquor to carry out calcium chloride crystallization, and carrying out solid-liquid separation to obtain calcium chloride and the calcium extraction mother liquor.