光助胺基催化作用的研究
发布时间：2018-07-16 14:24
【摘要】：为实施可持续发展战略,使化工生产与资源利用和环境保护协调发展,研发低损耗、低污染、高选择性的化工生产技术已迫在眉睫。生物酶催化在光照提供能量的作用下,反应过程持续、稳定、高效且符合绿色化工的发展要求。仿生催化借鉴生物酶高选择性、高活性、反应条件温和等特点,在生产技术方面显示出较大的优势。光照在生物酶催化反应过程中扮演着重要的角色,研究光照在酶催化反应中的作用,以此作为研发新型化工生产技术的突破点。本文从分析常青植物叶片内微量元素的含量出发,辅以有机酸,采用仿生的思路构建有机酸 金属离子仿生光助催化体系。考察在光照的情况下,各种影响因子对所设计仿生催化体系的影响作用。同时考察有机酸 金属离子对仿酶催化过渡态的影响。植物体内存在多种微量元素,它们在植物的新陈代谢中发挥着不同的作用,共同维持植物的生长。所选植物叶片的组成分析显示,微量元素的含量差别较大,即便是同一种微量元素,在新叶与老叶中的含量也有明显差异。含铁、锰、锌、铜或硫等微量元素的物种的循环伏安曲线显示,在近植物生理条件下,植物体内含量较多的微量金属元素—铁元素和铜元素的抗氧化性质较好。仿生构建有机酸 复合金属离子体系,考察光照等影响因素对有机酸 复合金属离子体系的氧化还原性质的影响。结果表明:铜离子的加入可以使有机酸 金属离子体系的氧化还原电位更加稳定,但铜离子浓度不易过高;硼酸可以起到稳定剂的作用,维持体系的稳定;磷酸盐的适量加入可通过调节体系的酸碱值达到维持体系稳定的目的;在光照的影响下,有机酸能够发生变化,但仍可以发挥络合作用。整个体系可以在光照的存在下,依靠各组成组分的相互影响稳定存在。在光照下,有机酸 金属离子可加快催化亚胺过渡态的分解。不同的金属离子对光的吸收波长不同,造成水溶液体系的升温速率不同,有机酸 金属离子可在光照的作用下,提高溶液体系的升温速率。
[Abstract]:In order to implement the strategy of sustainable development, coordinate the development of chemical production with resource utilization and environmental protection, and develop chemical production technology with low loss, low pollution and high selectivity, it is urgent to develop chemical production technology with low loss, low pollution and high selectivity. Under the action of energy provided by light, the reaction process is continuous, stable, efficient and in line with the development of green chemical industry. Biomimetic catalysis has the advantages of high selectivity, high activity and mild reaction conditions. Light plays an important role in the process of enzymatic catalytic reaction. The role of light in enzymatic catalytic reaction is studied as a breakthrough point in the development of new chemical production technology. Based on the analysis of the contents of trace elements in the leaves of evergreen plants, the bionic photocatalytic system of organic acid and metal ions was constructed with organic acid and bionic acid. The effects of various influencing factors on the bionic catalytic system were investigated. At the same time, the effect of organic acid metal ions on the catalytic transition state of imitating enzyme was investigated. There are a variety of trace elements in plants, they play different roles in plant metabolism, together to maintain the growth of plants. The composition analysis of the selected plant leaves showed that the contents of trace elements varied greatly, and even the same trace elements had obvious differences between the new leaves and the old ones. The cyclic voltammetry curves of species containing trace elements such as iron, manganese, zinc, copper and sulfur show that the trace metal elements, iron and copper, which are more abundant in plants, have better antioxidant properties under near plant physiological conditions. The bionic organic acid and anion complex metal ion system was constructed, and the effect of light and other factors on the redox properties of the organic acid compound metal ion system was investigated. The results show that the addition of copper ion can stabilize the redox potential of organic acid metal ion system, but the concentration of copper ion is not too high, boric acid can act as stabilizer and maintain the stability of the system. The proper addition of phosphate can maintain the stability of the system by adjusting the pH of the system. Under the influence of light, the organic acid can change, but it can still play a complexation effect. The whole system can exist stably in the presence of light, depending on the interaction of the components. Organic acid metal ions can accelerate the decomposition of the transition state of imines under light. The different absorption wavelengths of different metal ions lead to different heating rates of aqueous solution system. The organic acid metal ions can increase the heating rate of solution system under the action of light.
【学位授予单位】：天津理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：Q811;O644.1
本文编号：2126671
[Abstract]:In order to implement the strategy of sustainable development, coordinate the development of chemical production with resource utilization and environmental protection, and develop chemical production technology with low loss, low pollution and high selectivity, it is urgent to develop chemical production technology with low loss, low pollution and high selectivity. Under the action of energy provided by light, the reaction process is continuous, stable, efficient and in line with the development of green chemical industry. Biomimetic catalysis has the advantages of high selectivity, high activity and mild reaction conditions. Light plays an important role in the process of enzymatic catalytic reaction. The role of light in enzymatic catalytic reaction is studied as a breakthrough point in the development of new chemical production technology. Based on the analysis of the contents of trace elements in the leaves of evergreen plants, the bionic photocatalytic system of organic acid and metal ions was constructed with organic acid and bionic acid. The effects of various influencing factors on the bionic catalytic system were investigated. At the same time, the effect of organic acid metal ions on the catalytic transition state of imitating enzyme was investigated. There are a variety of trace elements in plants, they play different roles in plant metabolism, together to maintain the growth of plants. The composition analysis of the selected plant leaves showed that the contents of trace elements varied greatly, and even the same trace elements had obvious differences between the new leaves and the old ones. The cyclic voltammetry curves of species containing trace elements such as iron, manganese, zinc, copper and sulfur show that the trace metal elements, iron and copper, which are more abundant in plants, have better antioxidant properties under near plant physiological conditions. The bionic organic acid and anion complex metal ion system was constructed, and the effect of light and other factors on the redox properties of the organic acid compound metal ion system was investigated. The results show that the addition of copper ion can stabilize the redox potential of organic acid metal ion system, but the concentration of copper ion is not too high, boric acid can act as stabilizer and maintain the stability of the system. The proper addition of phosphate can maintain the stability of the system by adjusting the pH of the system. Under the influence of light, the organic acid can change, but it can still play a complexation effect. The whole system can exist stably in the presence of light, depending on the interaction of the components. Organic acid metal ions can accelerate the decomposition of the transition state of imines under light. The different absorption wavelengths of different metal ions lead to different heating rates of aqueous solution system. The organic acid metal ions can increase the heating rate of solution system under the action of light.
【学位授予单位】：天津理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：Q811;O644.1
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1 翟浩;光助胺基催化作用的研究[D];天津理工大学;2016年
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