نتایج جستجو برای: nano al mcm 41

تعداد نتایج: 577342  

Journal: :advances in environmental technology 0
masoume ghorbani chehel magham street, aley 6, no. 72 seyyed mostafa nowee ferdowsi university of mashhad

in the current investigation a novel nano hybrid adsorbent mcm-41/n-(3-trimethoxysilyl)-propyl)diethylenetriamine (mcm-41/tmspdeta) was prepared and was characterized using dls (dynamic light scattering), fourier transform infrared (ftir), x-ray diffraction (xrd), brunauer–emmett–teller (bet) analytical techniques and transmission electron microscopy (tem). the synthesized mcm-41/tmspdeta adsor...

Journal: :chemistry of solid materials 2013
alireza khorshidi sirous heidari

incorporation of [fe(bipy)cl4][bipy.h] (1) (where bipy is 2,2′-bipyridine) in the molecular sieves of the type lta, nay and mesoporous al-mcm-41 by using a “ship in a bottle synthesis” approach was investigated. [fe(bipy)cl4][bipy.h] was successfullyincorporated in the channels ofmesoporousal-mcm-41, and the product was characterized by x-ray diffraction, ftir and bet analysis. it was fou...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1391

چکیده در بخش اول این کار پژوهشی، ترکیبات پیرانو[3,2-c]پیریدین از واکنش بین –nمتیل-5،3-دی بنزیلیدن پی پیریدین4-اون و مالونونیتریل در حضور نانو کاتالیست mcm-41-so3h و شرایط بدون حلال در مدت زمان 9 تا 15 دقیقه و دمای c? 115 با بازده بالا سنتز شدند. در بخش دوم این کار پژوهشی، ترکیبات -nآریل-?-آمینو-1،?-نفتیریدین نیز از واکنش سه جزیی بین –nمتیل-3،5-دی بنزیلیدن پی پیریدین4-اون، آنیلین و مالونونیتر...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه خلیج فارس - پژوهشکده پتروشیمی 1392

مواد مزوروزن، ذرات متخلخلی هستند که اندازه ی حفرات آن ها بین 2 تا 50 نانومتر است. mcm-41 یکی از این مواد است که دارای ویژگی های مهمی مثل مساحت سطحی و حجم حفرات بالا، اندازه ی حفرات یکنواخت و قابل تنطیم و همچنین مقاومت گرمایی زیاد می باشد. سنتز، بهینه سازی و شناسایی مواد مزوروزن جدید مثل mcm-41 به دلیل کاربردهای فراوان آن در کاتالیزگری، جذب و ... به سرعت در حال گسترش است. در این پژوهش سنتز مزور...

Journal: :Nanomaterials and Nanotechnology 2023

Ecofriendly chitosan/Al-MCM-48 (CH/Al-MCM) was synthesized from natural microcline and assessed as a potential adsorbent of As (V) ions with enhanced capacity. The adsorption properties CH/Al-MCM were in comparison Al-MCM-41 single phase. studied exhibits 178.6 mg/g capacity which is higher than (124 mg/g). illustrated based on the pseudo-first-order kinetic, Langmuir isotherm, monolayer model ...

2014
Chengli Huo Jing Ouyang Huaming Yang

Highly ordered aluminum-containing mesoporous silica (Al-MCM-41) was prepared using attapulgite clay mineral as a Si and Al source. Mesoporous complexes embedded with CuO nanoparticles were subsequently prepared using various copper sources and different copper loadings in a direct synthetic route. The resulting CuO/Al-MCM-41 composite possessed p6mm hexagonally symmetry, well-developed mesopor...

2011
Yu-Chang Chang Hsunling Bai Shou-Nan Li Chun-Nan Kuo

A meso-structured Al-MCM-41 material was impregnated with bromocresol green (BG) dye and then incorporated into a UV-Vis DRA spectroscopic instrument for the online detection of ammonia gas. The absorption response of the Al-MCM-41/BG ammonia sensing material was very sensitive at the optical absorption wavelength of 630 nm. A high linear correlation was achieved for ppmv and sub-ppmv levels of...

2011
Qisheng Wu Shuiping Li

TiO2/Al-MCM-41 composites with various titania content were prepared by loading titania into the mesopores of Al-MCM-41 mesoporous molecular sieve from coal-measure kaolin as silicon and aluminum source via general sol-gel method and incipient wetness impregnation method. TiO2/Al-MCM-41 composites were characterized by XRD, FT-IR and SEM, and the photocatalytic degradation of methyl orange solu...

Journal: :Journal of hazardous materials 2012
M Silva M J F Calvete N P F Gonçalves H D Burrows M Sarakha A Fernandes M F Ribeiro M E Azenha M M Pereira

In the present study the authors investigated a set of three new zinc(II) phthalocyanines (zinc(II) tetranitrophthalocyanine (ZnTNPc), zinc(II) tetra(phenyloxy)phthalocyanine (ZnTPhOPc) and the tetraiodide salt of zinc(II)tetra(N,N,N-trimethylaminoethyloxy) phthalocyaninate (ZnTTMAEOPcI)) immobilized into Al-MCM-41 prepared via ship-in-a-bottle methodology. The samples were fully characterized ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید