2 results about "Direct process" patented technology

The present invention discloses a method for continuously co-producing HFO1234ze and HCFO1233zd (E, Z), which comprises the following steps: using a catalyst, HF and R240fa as the bottom materials, wherein the catalyst includes an amine catalyst and a co-catalyst, controlling the reaction temperature and pressure in the reactor, and then continuously introducing HF and R240fa for fluorination reaction, and continuously extracting the products containing HFO1234ze and HCFO1233zd (E, Z). By introducing the amine catalyst and the co-catalyst, the present method constructs a homogeneous near-ionic liquid system, enabling the full fusion of the organic phase and the inorganic phase, improving the reaction efficiency, having a high total product yield, having a simple and direct process route, having an advantage in industrial production cost, having the reaction products and intermediates mainly existing in the form of olefin compounds, reducing the by-products of the fluorination reaction, reducing the purification difficulty and the equipment cost, and having a continuous, stable, safe and controllable reaction process.

This invention discloses a one-step method for preparing magnetic vermiculite nanosheets, belonging to the field of vermiculite nanosheet preparation technology. The method includes the following steps: pretreating natural raw vermiculite powder to obtain pretreated vermiculite powder; dispersing the pretreated vermiculite powder in a liquid medium to obtain a reaction slurry; grinding the reaction slurry while simultaneously introducing oxidizing gas for in-situ oxidation and magnetic attenuation to obtain a post-reaction slurry; and post-processing the post-reaction slurry to obtain magnetic vermiculite nanosheets. This method achieves a one-step direct process from raw materials to a functional end product, significantly shortening the process flow, avoiding multiple separations, washing, and drying steps, significantly improving production efficiency, and greatly reducing energy and material consumption. It solves the technical problem that existing methods cannot achieve one-step preparation of magnetic vermiculite nanosheets.