相关实验视频

Updated: Jun 6, 2025

Resource Recycling of Red Soil to Synthesize Fe2O3/FAU-type Zeolite Composite Material for Heavy Metal Removal

Resource Recycling of Red Soil to Synthesize Fe2O3/FAU-type Zeolite Composite Material for Heavy Metal Removal

Published on: June 2, 2022

制备具有不同结晶度的α-FeOOH及其低温脱硫性能

Biao Pan¹, Zhihong Zhang¹, Yuewen You¹

¹Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, People's Republic of China.

Environmental technology

|November 28, 2024

概括

无形和晶体铁氧化 (α-FeOOH) 在低温脱硫中表现出很高的性能. 材料结构受制备温度的影响,影响脱硫效率和脱硫率.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
化学工程是化学工程的重要组成部分.

背景情况:

低温脱硫对于工业过程至关重要.
铁氧化 (α-FeOOH) 是一种潜在的材料,可以去除硫化.
了解α-FeOOH的结构-性质关系是优化其性能的关键.

研究的目的:

研究制备温度对α-FeOOH的结构的影响.
为了评估在低温下晶体和无形α-FeOOH的脱硫性能.
阐明控制α-FeOOH脱硫效率和失活的机制.

主要方法:

在不同温度 (-5-5°C和10-20°C) 下合成晶体和无形α-FeOOH.
使用X射线衍射 (XRD),布鲁努埃尔埃梅特特勒 (BET) 分析,里埃变换红外光谱 (FT-IR) 和UV-Vis光谱学进行了表征.
低温脱硫试验和不活动力学分析.
热力学计算.热力学计算.

主要成果:

在-5-5°C合成的α-FeOOH表现出具有小颗粒的无形结构,而在10-20°C合成时表现出具有大颗粒的晶体结构.
无形和晶体α-FeOOH在低温下表现出高的脱硫性能.
晶体α-FeOOH的性能与特定的表面积和物理吸附有关,而无形的α-FeOOH则受到微孔阻塞导致的失活的影响.
热力学分析证实α-FeOOH适用于低温脱硫.

结论:

制备温度显著影响α-FeOOH的结构 (晶体与无形) 和颗粒大小.
α-FeOOH的两个结构形式都有效用于低温脱硫,具有不同的性能机制.
α-FeOOH 是一种有前途的材料,可在低温工业应用中有效去除硫化.

关键词:

在低温下进行脱硫.停机动力学停机动力学脱硫器是一种脱硫器.热力学热力学热力学 α-FeOOHH 的意思是

更多相关视频

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments

Published on: May 11, 2017

Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties

Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties

Published on: November 15, 2016

相关概念视频

Sample Preparation for Analysis: Advanced Techniques

Sample Preparation for Analysis: Advanced Techniques

Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.

Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.