一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

ChemicalBook >> journal list >> Chemical Engineering Journal >>article
Chemical Engineering Journal

Chemical Engineering Journal

IF: 13.3
Download PDF

Densely embedded homogeneous FeOx nanoparticles in N-doped carbon frameworks: A 3D scaffold catalyst for high-temperature Fischer-Tropsch synthesis

Published:6 December 2024 DOI: 10.1016/j.cej.2024.158333
Mengmeng Xi, Yang Cheng, Fanhui Meng, Xuefang Yao, Muhammad Asif Nawaz, Maria Saif, Zhong Li, Tomas Ramirez Reina

Abstract

Fe-based catalysts show great promise in advancing the application of high-temperature Fischer-Tropsch synthesis (HT-FTS) for producing value-added chemicals and liquid fuels; however, maintaining high catalytic activity and stability at elevated temperatures remains a significant challenge. Here, a novel approach was employed to prepare carbon sphere (CS)-supported Fe catalysts, where isolated Fe particles are efficiently embedded within a carbon matrix to enhance both catalytic activity and stability. The resulting 3D scaffold structure catalyst featuring ultrafine FeOx nanoparticles (NPs) dispersed within nitrogen-doped carbon frameworks was synthesized from Fe-chitosan/CS composites using a chelate-assisted impregnation method paired with unidirectional freeze treatment. The coordination between chitosan chains and Fe(Ⅲ) has yielded a homogeneous Fe-chitosan composite, with the embedded FeOx NPs within the nitrogen-doped carbon (NC) matrix serving as pivotal barriers against sintering, thus enhancing stability. The synergistic effect of adding K promoter and the resulting 3D scaffold structure in Fe-K@NC/CS catalyst has further fine-tuned catalytic activity, ensuring high stability in HT-FTS. The current strategy of fabricating N-doped 3D scaffold structures of hybrid carbonaceous material achieved unprecedented results, with the CO conversion reached 62.7?% and C2-C4= olefin selectivity of 29.0?% at 340?°C, 20 bar and space velocity of 48000?mL gcat–1h?1.

Substances (6)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Chitosan 9012-76-4 C6H11NO4X2 1038 suppliers $13.00-$4250.00
Ethanol 64-17-5 C2H6O 999 suppliers $10.00-$41399.50
Formaldehyde 50-00-0 CH2O 916 suppliers $10.00-$1760.00
Resorcinol 108-46-3 C6H6O2 900 suppliers $7.62-$4205.00
Ammonia 7664-41-7 H3N 570 suppliers $15.00-$3688.65
Ferric nitrate 10421-48-4 FeN3O9 187 suppliers $23.30-$72.80

Similar articles

IF:5.5

High-performance amperometric detection of hydroxylamine on fluorine doped tin oxide electrode modified with NiCo2O4 nanoparticles

Electrochimica Acta Asha Ramesh , Neeraja Sinha Gudipati ,etc Published: 1 September 2023
IF:6.8

Neopentyl Glycol as a Scaffold to Provide Radiohalogenated Theranostic Pairs of High In Vivo Stability

Journal of Medicinal Chemistry Hiroyuki Suzuki*, Yuta Kaizuka,etc Published: 28 October 2021
凌海市| 南木林县| 平安县| 逊克县| 建德市| 武汉市| 刚察县| 嵊泗县| 平邑县| 上犹县| 鲁山县| 岑溪市| 岑巩县| 通道| 万载县| 黄龙县| 黄梅县| 郧西县| 东山县| 恩平市| 华安县| 三原县| 册亨县| 昔阳县| 榆中县| 巴林左旗| 邯郸县| 宜阳县| 漳浦县| 巫溪县| 台东市| 龙里县| 鹤庆县| 梅河口市| 武川县| 平湖市| 鄄城县| 望谟县| 靖西县| 凤翔县| 涿州市|