With the increase of environmental protection pressure and the rapid development of green chemistry, the development of catalyst preparation technologies and new catalyst materials has been highly valued by countries around the world. Catalyst development has become an important area of ​​international technological competition. Tian Zhijian, Director of the Division of Fossil Energy and Applied Catalysis of Dalian Institute of Chemical Physics, Chinese Academy of Sciences, said in an interview that catalyst technology is the priority for the development of related industries. In the next five years, the use of catalysts that are non-toxic and harmless to humans and the ecological environment will be obtained. The target product is the pursuit goal of green chemistry, in which the new catalyst will play an important role, and it has a lot to do in the areas of resource utilization, energy development, pharmaceutical manufacturing, and low-carbon environmental protection.
New type of catalyst emerges
Tian Zhijian said that the role of catalysts in improving the economic benefits of the chemical and petrochemical industries is incalculable. For example, he said that fine chemicals are technologically intensive, variety-rich, small-yield, and high-value-added chemical products, and their production process has many types of reactions. The production of a fine chemical product includes many reaction steps, and the product has a complex structure, a high purity requirement, and a long production process. To achieve this, new catalytic technologies need to be adopted.
He believes that in order to eliminate pollution from the source, we should focus on the development of catalysts for green and efficient conversion of fossil fuels, syngas catalytic conversion to liquid fuels, production of high-quality clean transportation fuels, and efficient conversion and utilization of hydrocarbon resources; for coal and petroleum The industrial chain is more scientific and complete, and new-type, high-efficiency, visible-light-induced photocatalysts should be developed, and their applications should be extended to the fields of environmental protection, building materials, military industry, and electric power to fundamentally solve energy and environmental pollution.
At present, raw materials in the market continue to deteriorate, demand for petroleum products continues to grow, environmental laws and regulations are further tightened, and the demand for oil refining catalysts is very strong. The catalytic hydrogenation of compounds can directly increase the yield, and the catalysts can be recycled directly, resulting in the growth rate of global hydrogenation process catalysts. It is expected to reach 30%~40%; the annual growth rate of ethylene oxide and environmental protection catalysts will also reach 10% and 8% respectively. With the rapid growth in the demand for ethylene glycol and polyester fibers, especially the rapid growth of the Chinese market has promoted the use of epoxy. With the development of the ethane market, the need to reduce nitrogen oxides and dioxins emissions has also driven the demand for environmentally friendly catalysts. In addition, solid acid catalysts can replace traditional sulfuric acid catalysts in important reactions such as esterification, alkylation, and isomerization. Solid bases replace traditional liquid alkali catalysts such as sodium hydroxide, which has become a development trend and has a promising development prospect. .
Numerous original innovation opportunities
In the evolution of technology, catalysts will be the focus of competition. The development of China's catalyst should be aimed at the direction of national industrial development. It must be scientific and forward-looking. Emerging industries such as new energy and new materials and leading industries should be the most attractive target markets in the future.
The emergence of new types of catalysts and corresponding catalytic processes is often catalyzed by new materials and elaborate preparation processes. In the future, catalyst materials are the most important for the development of new catalysts and new processes.
The reporter learned from Dahua’s Catalysis Research Department that new catalyst materials can affect a variety of catalyst processes and have industrial application prospects. There are many opportunities for original innovation in this research field. At present, the world's new catalyst materials mainly include: nano-siemens composite materials, supported heteropoly acids, transition metal nitrides/carbides, ionic liquids, new system oxidized materials, etc. These will be the focus of China's original catalytic technology innovation.
Clean production has "through train"
Among the various types of organic chemicals produced by catalytic processes, about 1/4 of products are produced by catalytic selective oxidation. The process of catalytic selective oxidation of hydrocarbons using oxygen and the like as an oxygen source is an environmentally friendly clean production process, but domestic large-scale oxidation devices are foreign introduction technologies. However, breakthroughs have been made in the design and preparation of new materials for the selective oxidation of hydrocarbons, the development of new oxidation processes and new processes.
On June 15, the researcher of the Dalian Institute of Chemical Physics, Xu Jie, said in an interview with reporters that the key orientation project of the Chinese Academy of Sciences under the auspices of him was “Key Technology for the Industrialization of Selective Oxidation of Hydrocarbons to Terephthalic Acid†recently passed the high-tech research and development of the Chinese Academy of Sciences. The acceptance of the Bureau of the Organization, the development of non-metallic catalytic materials applied to the selective oxidation of hydrocarbons, not only to achieve a high degree of selective oxidation under mild conditions, but also the oxidation process from the traditional metal catalyst liberated.
Dahua designed and developed the hydrocarbon selective oxidation non-metallic catalytic new material used in the process of selective oxidation of toluene to benzoic acid, with a conversion rate of 20.9%, selectivity of more than 98%, and reduced by-products. Moreover, the amount of catalyst is small, the reaction operation is stable, and the coking of the tube is not blocked, which not only can greatly increase the production capacity of the device, but also can significantly reduce the material consumption and the cost.
The project also developed a new method for the preparation of combination of trace and constant catalytic materials, which can produce 100 to 300 catalysts at a time, and has been successfully applied to the development of naphtha catalytic cracking to olefins catalytic materials. The solid composite metal oxide catalysts developed have been applied to the selective oxidation of cyclohexane to cyclohexanone/alcohol and have the characteristics of high activity, good selectivity and mild reaction conditions. The project team developed a new material for phase transfer catalysis with reaction control. The conversion of propylene epoxidation to propylene oxide was 90%, the selectivity was over 94%, the recycling rate of catalyst recycling was 93%, and it was successfully applied to cyclohexene epoxidation. The epoxy cyclohexane process was completed and industrial trial production was completed.
System is of high stability and
responsiveness. System uses color LCD, man made interface for easy operation and
with a number of peripheral interfaces.
FEATURES
- A variety of text can be switched.
- Manual, semi-automatic and fully automatic mode.
- To provide EUROMAP robot interface.
- Automatic movement monitoring with alarm and fault diagnosis.
- Function of slope setting can set the start and stop of movements, so as ensure the smooth movement
Standard/Normal Plastic Injection Molding Machines
Injection Molding Machines, Standard Plastic Injection Molding Machines, Normal Plastic Injection Molding Machines
Ningbo Konger Machinery Co., Ltd. , http://www.kongerchina.com