文献类型：期刊文献

英文题名：A study on the kinetics of [Fe(III)NTA] reduction catalyzed by activated carbon in a stirred reactor

作者：Long, Xiang-li[1];Wang, Peng[1];Li, Cong[1];Huang, Tao[2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Jingkong Elect Power Guodian Wangping Power Genera, 206 Prov Rd, Shuozhou 038300, Shanxi, Peoples R China

年份：2025

外文期刊名：BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20255019691341);WOS:【SCI-EXPANDED(收录号:WOS:001632335900001)】；

语种：英文

外文关键词：Nitric oxide; Fe(II)NTA; Activated carbon; Kinetics; Catalysis

摘要：Nitric oxide can be scrubbed from the exhausted gases with [Fe(II)NTA]- solution. However, the ability of combining NO will be lost because [Fe(II)NTA]- is oxidized to [Fe(III)NTA] by the oxygen coexisting with NO in the exhausted gases. The regeneration of [Fe(II)NTA]- can be realized by reducing [Fe(III)NTA] with sulfite under the catalysis of activated carbon. In this study, the catalytic reduction of [Fe(III)NTA] has been studied in a stirred cell systematically. The experiments indicate that the intrinsic kinetics of this catalytic reaction can be obtained with a stirring speed over 300 r min- 1 and a particle size of activated carbon smaller than 100-120 mesh. The optimal carbon dosage is 15 g L- 1. The [Fe(II)NTA]- regeneration rate increases with the initial concentrations of [Fe(III)NTA] and sulfite. The [Fe(III)NTA] conversion decreases with the rise of pH. The [Fe(II)NTA]- regeneration is enhanced with the molar Fe3+/NTA3- ratio. The [Fe(IIINTA] reduction is enhanced with temperature. The kinetic equation of this catalytic reaction can be illustrated as\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$r{\text{=}}\frac{{{k_1}{k_2}m{K_f}{C_{{\text{Fe}}\left( {{\text{III}}} \right){\text{NTA}}}}<^>{{{\raise0.7ex\hbox{$1$} \!\mathord{\left/ {\vphantom {1 n}}\right.\kern-0pt}\!\lower0.7ex\hbox{$n$}}}}{C_{{H<^>{\text{+}}}}}{C_{S{O_3}<^>{{2 - }}}}<^>{{0.5}}}}{{{k_{{\text{-}}1}}m{C_{NTA}}{{{\text{(}}1+{{{C_{{H<^>+}}}} \mathord{\left/ {\vphantom {{{C_{{H<^>+}}}} {{K_{a2}}<^>{\theta }}}} \right. \kern-0pt} {{K_{a2}}<^>{\theta }}}{\text{)}}}<^>{0.5}}{\text{+}}{k_2}{C_{S{O_3}<^>{{2 - }}}}<^>{{0.5}}}}$$\end{document}The parameters estimated at 80 degrees C are k1Kf = 4.50\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\times$$\end{document}105 L2.2- 1.2 min- 1 g- 1, k- 1=24.13 L2 g- 1- 1 min- 1, k2 = 1.59 L mol- 1 min- 1, 1/n = 0.87. The intrinsic activation energy Ea is 65.37 kJ mol- 1. The NO removal efficiency can be kept at a high level for a long period of time with the [Fe(II)NTA]- solution when the [Fe(II)NTA]- regeneration is made with activated carbon as a catalyst.