Preparation method of surface self-growing catalytic active layer, surface self-growing catalyst, PTC heater and application thereof

• Main Authors: YANG TIANYUAN, DOU YONGSHEN, FU LIN, LI YONGFENG, LIU SANMAO, YE FEIHUA
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; THEIR RELEVANT APPARATUS; TRANSPORTING

According to the preparation method of the surface self-growth catalytic active layer, the surface self-growth catalyst, the PTC heater and the application of the surface self-growth catalyst, an aluminum or aluminum alloy substrate is placed in a catalytic active solution containing a precious metal salt aqueous solution for a surface self-growth reaction, and the catalytic active layer with the thickness smaller than 1 micrometer is directly formed on the surface of the PTC substrate in a self-growth mode; the adhesive has the advantages of high adhesion firmness, uniform distribution and low possibility of falling off; the preparation method of the catalyst provided by the invention is simple in implementation steps and convenient to operate, does not need vacuum extraction and high-temperature roasting steps, and can greatly reduce the energy consumption and lower the cost. And the thickness of the formed catalytic active layer is very thin, the airflow flowing direction is not influenced, and the air res