4 results about "Isonicotinic acid" patented technology

This invention provides a chemical mechanical polishing (CMP) slurry and its application. The CMP slurry comprises: a catalyst, a stabilizer, an oxidant, a pH adjuster, abrasive particles, a corrosion inhibitor, and water. The corrosion inhibitor is a nitrogen-containing heterocyclic carboxylic acid compound, wherein the nitrogen-containing heterocyclic carboxylic acid compound includes at least one selected from nicotinic acid, isonicotinic acid, pyridinecarboxylic acid, imidazocarboxylic acid, pyrazolecarboxylic acid, 3-pyridineacetic acid, 3-pyridinepropionic acid, 3-methyl-2-pyridinecarboxylic acid, and L-piperidine acid. The CMP slurry provided by this invention can simultaneously polish tungsten and silicon oxide, and can also control the polishing rate of silicon oxide while inhibiting tungsten corrosion, thus making it suitable for different application scenarios. In addition, the CMP slurry has good stability and can maintain its performance even after long-term standing.

A high-performance benzoxazine composite material and its preparation method are disclosed, relating to the design and manufacturing of flame-retardant benzoxazine composite materials. The composite material comprises a benzoxazine-based phase change material and a silane-crosslinked melamine-isonicotinic acid supramolecular aerogel (Si-MA / IA) encapsulating the benzoxazine-based phase change material. The benzoxazine-based phase change material is prepared by a Mannich reaction of phenolic compounds, octadecylamine, and paraformaldehyde. The Si-MA / IA is prepared by a crosslinking reaction of melamine (MA), isonicotinic acid (IA), and silica sol precursor, followed by freeze-drying. This invention prepares benzoxazine-based phase change materials (BZ-PCMs) through a Mannich reaction and encapsulates them in a silane-crosslinked melamine-isonicotinic acid supramolecular aerogel (Si-MA / IA). This composite material can form a stable char layer at high temperatures to prevent leakage, exhibits excellent synergistic flame-retardant effects, meets the requirements of sustainable development, and has broad application prospects.

This invention discloses a dual-site heterovalent metal MOF material for NO adsorption, its preparation method, and its application, belonging to the field of gas adsorption materials. The chemical formula of this material is [Cu]. Ⅰ (Cu Ⅱ )4(2-TPY)2(IA ‑ )3(NO3 ‑ )2I ‑ O 2‑ ]·(NO3 ‑ The material was prepared by a solvothermal method using the reaction of bis(terpyridine), isonicotinic acid, and cuprous iodide. This material possesses a three-dimensional structure and Cu... Ⅰ / Cu Ⅱ The bimetallic active sites exhibit excellent thermal stability, high specific surface area, and highly selective adsorption capacity for NO. This invention solves the problems of low NO adsorption capacity and poor selectivity of traditional adsorbents in complex flue gas, and can efficiently achieve NO / CO separation. It is suitable for the deep removal and resource utilization of NO in industrial waste gas, and has good cycle stability and application prospects.