کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7210462 1469210 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of Ethylene Diamine Tetraacetic Acid on the Performance of Magnesia Supported Ru-based Catalysts for Ammonia Synthesis
ترجمه فارسی عنوان
تأثیر اتیلن دی آمین تترا اسیدهای اسید بر عملکرد کاتالیزورهای مبتنی بر مگنزیت بر پایه سنتز آمونیاک
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک مواد
چکیده انگلیسی
A series of barium doped nano-magnesia supports (Ba-MgO) modified with ethylene diamine tetraacetic acid (EDTA) were prepared by chemical co-precipitation with an ultrasonic method and were used as supports to prepare Ru-based catalysts. The surface texture and the matter phase of the supports and Ru catalysts were characterized by X-ray diffraction, scanning electron microscope, N2 physical-adsorption, H2 temperature-programmed reduction and inductively coupled plasma-atomic emission spectrometry. The results show that modification of EDTA increases the amount of barium promoter into the support and controls the formation state of barium in supports. The effects of barium promoter content and surface texture in supports achieve an equilibrium state when the molar ratio of EDTA to Ba is 1/2, and the highest activity of Ru/Ba-MgO catalyst is 69.31 mmol·(g·h)−1 under the reaction conditions of 10 MPa, 10 000 h−1 and 698 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metal Materials and Engineering - Volume 46, Issue 3, March 2017, Pages 657-662
نویسندگان
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