地球に豊富な金属で触媒を拡張するために自然の設計図を使用します
R Morris Bullock1, Jingguang G Chen2,3, Laura Gagliardi4
1Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, Richland, WA 99352, USA. morris.bullock@pnnl.gov jgchen@columbia.edu gagliard@umn.edu yogi@mit.edu.
まとめ
自然
科学分野:
- 生化学と材料科学
- 触媒と持続可能な化学
背景:
- 地球に豊富な金属を使用する金属酵素は,生物学的酸化還元変換に不可欠です.
- プラチナ系金属は,高い性能と安定性により,産業用触媒を優位にしています.
研究 の 目的:
- 大量の金属を触媒で利用する 自然の戦略を探る
- 地球に豊富な金属から効率的な触媒を開発するための原理を特定する.
主な方法:
- 金属と貴金属を区別する物理的性質の分析
- 触媒的な洞察のための金属酵素機構の調査.
主要な成果:
- 豊富な金属は,触媒に適したユニークな物理特性を有しています.
- 自然界のデザインは 高い効率で豊富な金属触媒の設計図を提示しています
結論:
- 自然の設計図を活用することで 豊富な金属の触媒の利用を拡大できます
- このアプローチは持続可能な燃料と化学製品生産の鍵です.
さらに関連する動画
関連する概念動画
Introduction to Mechanisms of Enzyme Catalysis
10.2K
For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...
10.2K
Catalysis
29.8K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
29.8K
Catalytically Perfect Enzymes
4.8K
The theory of catalytically perfect enzymes was first proposed by W.J. Albery and J. R. Knowles in 1976. These enzymes catalyze biochemical reactions at high-speed. Their catalytic efficiency values range from 108-109 M-1s-1. These enzymes are also called 'diffusion-controlled' as the only rate-limiting step in the catalysis is that of the substrate diffusion into the active site. Examples include triose phosphate isomerase, fumarase, and superoxide dismutase.
Most enzymes...
Most enzymes...
4.8K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.7K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.7K
Factors Influencing the Rate of Chemical Reactions
7.6K
A variety of factors influence the rate of chemical reactions. For a chemical reaction to happen, atoms must collide with enough energy to overcome the repulsion between their electrons. This energy is called activation energy. Factors influencing the rate of reaction either lower the activation energy or increase the likelihood of a successful collision.
Concentration and Pressure:
The more particles present within a given space, the more likely those particles are to bump into one another....
Concentration and Pressure:
The more particles present within a given space, the more likely those particles are to bump into one another....
7.6K
Enzymes
91.1K
Inside living organisms, enzymes act as catalysts for many biochemical reactions involved in cellular metabolism. The role of enzymes is to reduce the activation energies of biochemical reactions by forming complexes with its substrates. The lowering of activation energies favor an increase in the rates of biochemical reactions.
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...
Enzyme deficiencies can often translate into life-threatening diseases. For example, a genetic abnormality resulting in the deficiency of the enzyme G6PD...
91.1K


