M. Sadeghi

[ 1 ] - Synthesis and Characterization of γ-MnO2-AgA Zeolite Nanocomposite and its Application for the Removal of Radioactive Strontium-90 (90Sr)

In this scientific research, for the first time, the removal of radioactive strontium-90 (90Sr) by γ-MnO2-AgA zeolite as a novel nanocomposite adsorbent was accomplished under different conditions such as pH, temperature, adsorbent amount and the contact time that are examined from drinking water of Ramsar city and monitored via Ultra Low-Level Liquid Scintillation Counting (LSC) technique. Pri...

[ 2 ] - Preparation and Application of MnO2 Nanoparticles/Zeolite AgY Composite Catalyst by Confined Space Synthesis (CSS) Method for the Desulfurization and Elimination of SP and OPP

In this work, zeolite NaY was prepared by hydrothermal method. Then, silver ions were replaced in the zeolite NaY with silver nitrate (AgNO3) solution via using ion exchange (IE) method. The Manganese dioxide (MnO2) nanoparticles (9.3 and 15.8 wt %) for guest were deposited in the zeolite AgY(host) structure with Mn(NO3)2 aqueous and KMnO4 solutions by confined space synthesis (CSS) metho...

[ 3 ] - Adsorption and Neutralization Chemistry of Dimethyl Methyl Phosphonate (DMMP) as an Organo-Phosphorous Pollutant (OPP) on the Surface of Nano-Structured Co3O4 and MnCo2O4 Catalysts

In this work, the practicality of catalytic surfaces of nano-structured Co3O4 and MnCo2O4 for the adsorption and neutralization reactions of dimethyl methyl phosphonate (DMMP) as an toxic agricultural organo-phosphorous pesticide has been investigated. The Co3O4 and MnCo2O4 NPs have been successfully prepared by precipitation method using cobalt nitrate and manganese nitrate as the precursors a...

[ 4 ] - Study on the effective decontamination and hydrolysis of sulfur mustard agent simulant using tenorite (CuO) nanoparticles as a destructive catalyst

In the present study, tenorite (CuO) nanoparticles have been assayed for their catalytic properties. The decontamination reaction of chloro ethyl ethyl sulfide (CEES) as an surrogate of sulfur mustard simulant have been accomplished on the surface of CuO NPs with different weight ratios at ambient temperature and monitored by Gas chromatography equipped with Flame ionization detector (GC-FID) a...

[ 5 ] - تهیه کامپوزیت نانو ذرات منگنز دی اکسید/ زئولیت AgYو بررسی واکنش آن با 2-کلرو اتیل فنیل سولفید و دی متیل متیل فسفونات

در این مقاله، زئولیت NaYبه روش سل-ژل و بدون حضور الگوهای آلی و افزودنی‌ها سنتز شد. سپس با استفاده از روش تبادل یونی به زئولیتAgY تبدیل شد. در مرحله بعدی، نانوذرات منگنز دی اکسید در منافذ زئولیت AgY به‌ روش فضای محدود(CS) سنتز شدند. کامپوزیت nano-MnO2/Zeolite AgY به روش‌های SEM، XRD، IR و AAS مورد شناسایی قرار گرفت. رفع و دفع آلودگی 2-کلرو اتیل فنیل سولفید (شبه عامل خردلی) و دی‌متیل متیل‌فسفو...

[ 6 ] - دسولفوره و حذف ترکیبات سولفوره و اورگانوفسفره با استفاده از کاتالیست کامپوزیتی M‏nO2

در این تحقیق، زئولیت NaY مولکولارسیو به روش هیدروترمال تهیه شد. سپس یون‌های نقره در زئولیت NaY با استفاده از نقره نیترات AgNO3و روش تبادل یونی برای تهیه زئولیتAgY جایگزین گردیدند. در مرحله بعدی، نانو ذراتمنگنز دی اکسید( به عنوان مهمان) به میزان 3/9 و 8/15 درصد وزنی در زئولیت AgY (به عنوان میزبان)با استفاده از محلول‌های M‏n(NO3)2 و KMnO4 به روش سنتز فضای محدود(CSS) تهیه شدند. نمونه‌های سنتز شد...

[ 7 ] - Synthesis of nanocrystalline zeolite NaY by hydrothermal method and investigation of its structure and morphology

Zeolite FAU type-Y is one of the most studied framework of all zeolites, and has been used as catalysts for number of reactions in the refinery and petrochemical industry. In this research, nanocrystalline zeolite Y was synthesized by hydrothermal method. The crystal size of zeolite Y is influenced by temperature, aging time, alkalinity, and water content. The synthesized zeolite NaY is identif...

[ 8 ] - Synthesis and Characterization of γ-MnO2-AgA Zeolite Nanocomposite and its Application for the Removal of Radioactive Strontium-90 (90Sr)

In this scientific research, for the first time, the removal of radioactive strontium-90 (90Sr) by γ-MnO2-AgA zeolite as a novel nanocomposite adsorbent was accomplished under different conditions such as pH, temperature, adsorbent amount and the contact time that are examined from drinking water of Ramsar city and monitored via Ultra Low-Level Liquid Scintillation Counting (LSC) technique. Pri...

[ 9 ] - Synthesis of nanocrystalline zeolite NaY by hydrothermal method and investigation of its structure and morphology

Zeolite FAU type-Y is one of the most studied framework of all zeolites, and has been used as catalysts for number of reactions in the refinery and petrochemical industry. In this research, nanocrystalline zeolite Y was synthesized by hydrothermal method. The crystal size of zeolite Y is influenced by temperature, aging time, alkalinity, and water content. The synthesized zeolite NaY is identif...