2results about How to "Continuous mass production" patented technology

This invention discloses a high-temperature resistant honeycomb core paper, its preparation method, and its application. The paper has a three-layer composite structure, including two outer layers and an intermediate layer. The two outer layers are identical in composition, consisting of high-temperature resistant chopped fibers and high-temperature resistant resin. The intermediate layer, located between the two outer layers, comprises high-temperature resistant micro / nano fibers, high-temperature resistant pulp fibers, high-temperature resistant chopped fibers, and high-temperature resistant resin. The high-temperature resistant micro / nano fibers are fibrillated PBO fibers. The high-temperature resistant pulp fibers are PBO pulp fibers. The mass ratio of the high-temperature resistant micro / nano fibers, high-temperature resistant pulp fibers, and high-temperature resistant chopped fibers is 3–15:15–35:50–75. Through material structure design, this invention effectively improves the paper's high-temperature resistance (>250℃) and UV aging resistance.

This application discloses an in-situ preparation method for a catalyst, comprising the following steps: gasifying a nitrogen-containing substance and / or a phosphorus-containing substance to obtain a mixed gas, passing it into a reactor containing a support, and performing heat treatment I and heat treatment II to obtain the catalyst. This method enables the uniform introduction of active components and additives, resulting in a uniform distribution of active sites in the prepared catalyst, which is beneficial for improving the catalyst's activity and selectivity. When used in the reaction of acetate and NH3, the catalyst can suppress side reactions and achieve high acetonitrile selectivity. It avoids corrosiveness to reaction equipment, provides mild reaction conditions, has high atom utilization, and is suitable for continuous, stable, and large-scale production.