相关实验视频

Updated: Jul 20, 2025

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

促进物类型和合成方法对基于Fe-Mn的FT-olefin催化剂的催化性能的影响

Gamze Gümüşlü Gür^1,2, Özge Atik^1,2

¹Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, İstanbul Technical University, İstanbul, Turkey.

Turkish journal of chemistry

|August 4, 2023

概括

开发高效的费舍尔-托普施合成 (FTS) 催化剂是轻烯酸生产的关键. 这项研究使用了高通量方法来选Fe-Mn催化剂,优化Cu,K和Ni等促进剂,以增强烯的选择性和转化.

科学领域:

催化剂是一种催化剂.
化学工程是化学工程的重要组成部分.
材料科学材料科学材料科学

背景情况:

化学工业的重要组成部分轻烯的直接生产需要高效的费舍尔-托普施合成 (FTS) 催化剂.
由于产品分销对催化剂成分和制备方法的敏感性,FTS的催化剂开发是复杂的.

研究的目的:

采用高通量 (HT) 方法来快速选FTS的各种Fe-Mn基催化剂.
确定最佳的促进元素 (Cu,K,Ni) 和浸剂,以增强轻烯的生产.

主要方法:

在大气压下通过HT方法对40个用Cu,K和Ni促进的α-Al2O3支持的Fe-Mn催化剂进行选,使用各种浸剂.
在传统系统中,在高压FTS条件下对有希望的催化剂候选物的进一步评估.
使用H2-TPR,XRD,SEM,EDS映射和N2吸附进行表征,以将性能与结构性质相关联.

主要成果:

(Ni) 促进了甲 (CH4) 生产,而铜 (Cu) 提高了一氧化碳 (CO) 的转化.
(K) 显著改善了烯的选择性和烯与烯的比率.
与Cu和K一起促进平衡的活性/稳定性,并进一步提高了olefin选择性,n-pentane辅助浸显示轻微的性能提升.

结论:

促进剂的选择 (Ni,Cu,K) 和浸方法对轻型烯酸生产的FTS中的催化剂性能具有关键影响.
HT选有效地确定了有前途的催化剂配方,将结构性质与催化结果相关联.
优化的Fe-Mn基催化剂具有特定的促进剂,为高效的轻烯合成提供了可行的途径.

关键词:

铁-Mn-Cu-K-K 的使用.菲舍尔 - 托普施合成高通量的高通量轻光的油脂素是一种轻光的油脂素.n-坦是什么意思?n-坦是什么意思溶剂溶剂的使用方法

更多相关视频

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs

Published on: January 17, 2020

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

相关概念视频

Olefin Metathesis Polymerization: Overview

Olefin Metathesis Polymerization: Overview

Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...

Catalysis

Catalysis

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.

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

Alkenes can be dihydroxylated using potassium permanganate. The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.

Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)

Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)

Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

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...

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...