نتایج جستجو برای: nh2 nh mcm 41
تعداد نتایج: 115477 فیلتر نتایج به سال:
The goal of this research was to investigate the potential of newly synthesized gold complex trichloro(2,4,6-trimethylpyridine)Au(III) as an anticancer agent. The gold(III) complex was synthesized and grafted on nanoporous silica, MCM-41, to produce AuCl(3)@PF-MCM- 41 (AuCl(3) grafted on pyridine-functionalized MCM-41). The toxicity of trichloro(2,4,6- trimethylpyridine)Au(III) and AuCl(3)@PF-M...
MCM-48 were prepared using hexadecyl trimethyl ammonium bromide and TEOS modified with N1-(3-trimethoxysilylpropyl) diethylenetriamine by post-synthesis method to develop efficient adsorbent for heavy metal adsorption. These materials determined X-ray diffraction, N2 adsorption–desorption measurement, scanning electron microscopy. The results show that the modification of resulted in a decrease...
Background and Objectives: The dyestuff manufacturing and textile industries consume a high volume of water and produce a great amount of wastewater containing various toxic substances. Removal of dyes from water by absorption processes has received considerable attention. In the present study, removal of Acid orange7 from aqueous solution using the mesoporous (Mobil Composition of Matter No-41...
MCM-41 was used as a support and, by using atomic layer deposition (ALD) in the liquid phase, a catalyst was prepared by consecutively loading titanium oxide and vanadium oxide to the support. This research analyzes the effect of the loading amount of vanadium oxide on the acidic characteristics and catalytic performance in the dehydration of butanol. The physical and chemical characteristics o...
چکیده زمینه و هدف: صنایع تولید رنگ و نساجی حجم زیادی از پساب های حاوی مواد خطرناک و سمی تولید می نمایند. فرایند جذب، یکی از روش های مناسب جهت حذف رنگ از صنایع آلوده می باشد. این پژوهش با هدف حذف رنگ اسید اورانژ 7 از محلول های آبی با استفاده از نانوحفره سیلیکایی mcm-41(mobile composition of matter no.41)اصلاح شده با گروه های آلی دی آمینی (nh2 -mcm-41) انجام شد. مواد و روش ها: این مطالعه آزمایشگ...
An efficient enzymatic process was developed to produce optically pure D-phenylalanine through asymmetric resolution of the racemic DL-phenylalanine using immobilized phenylalanine ammonia-lyase (RgPAL) from Rhodotorula glutinis JN-1. RgPAL was immobilized on a modified mesoporous silica support (MCM-41-NH-GA). The resulting MCM-41-NH-GA-RgPAL showed high activity and stability. The resolution ...
In this research, the fabrication of MCM-41 mesoporous material nanofibers by an electrospinning technique was performed. The MCM-41 nanofibers (MCM-41 NFs) as a novel host on the incorporation of silver has been studied in [Ag(NH3)2]NO3 precursor solution through the heat-treatment process. The formation of silve...
Synthesis and characterization of novel Tea Tree Oil (TTO) loaded antibacterial polyurethane rigid foams using two distinct methods is reported. In the first method, 3-aminopropyltriethoxysilane (APTS) functionalized mesoporous silica was used as carrier TTO for preparing amino-functionalized (TTO-NH2-MCM-41). second one, encapsulated by via sol-gel then APTS, nanocontainers with amino groups (...
در بخش اول این کار پژوهشی، سنتز دو جزئی ترکیبات پیرانو[c-2,3] پیریدین، از واکنش بین n-متیل-5,3-دی بنزیلیدن پی پیریدین-4-اون و مالونونیتریل، در حضور کاتالیزورهای fe3o4-go-nh2 وmcm- 41-lprno3 -fe2o3–? مورد بررسی قرار گرفت. پس از انجام بهینه سازی شرایط واکنش برای هر کاتالیزور (بهینه سازی اثر حلال و دما، اثر مقدار کاتالیزور و اثر مقدار مالونونیتریل)، به دلیل شرایط واکنش کارآمدتری که در حضور کاتالیز...
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