Hydrocracking of Vacuum Gasoil on the Novel Mesoporous MCM-41 Aluminosilicate Catalyst

Corma, Avelino; Martı́nez, Agustı́n; Martínez‐Soria, Vicente; Montón, Juan B.

doi:10.1006/jcat.1995.1104

Cited by 383 publications

(150 citation statements)

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“…M41S ailesinin bilinen en önemli üyesi olan MCM-41, düzenli hekzagonal yapıya, üniform gözenek genişliğine ve 15-100 Å aralığındaki geniş gözenek çapına sahiptir [17]. Düzenli geometriye sahip olan bu malzemeler, katalizör [18], kontrollü ilaç salımı [19], biyosensörler [20], adsorpsiyon [21,22] ve membran uygulamaları [23] gibi alanlarda yaygın olarak kullanılarak ekoloji ve nanoteknoloji uygulamalarında çok büyük önem kazanmışlardır.…”

Section: Introductionunclassified

Amin Grupları ile Fonksiyonelleştirilmiş MCM-41 Mezogözenekli Silika Üzerine CO2 Adsorpsiyonu

Yılmaz

2017

SDÜ Fen Bil Enst Der

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Özet: Bu çalışmada, saf silika kaynağından üretilen mezogözenekli silika MCM-41'in yüzeyi aşılama yöntemiyle amin grupları ile fonksiyonelleştirilmiştir. Fonksiyonelleştirilen ürünün karakterizasyonu X-ışınları difraktometresi (XRD), termogravimetri/diferansiyel termal analiz (TG/DTA), Fourier dönüşümlü infrared spektroskopisi (FTIR) ve Brunauer-Emmett-Teller (BET) cihazında gerçekleştirilmiştir. Fonksiyonelleştirilen ve fonksiyonelleştirilmemiş MCM-41 adsorbanlarının CO2 adsorpsiyon kapasiteleri 25, 75 ve 100°C'de TG/DTA cihazı ile belirlenmiştir. Sonuç olarak, fonksiyonelleştirilen MCM-41'in daha yüksek CO2 adsorpsiyon kapasitesine sahip olduğu görülmüştür. CO2 Adsorption on Functionalized MCM-41 Mesoporous Silica with Amine GroupsKeywords MCM-41, CO2, Adsorption, Grafting, Amine group Abstract: In this study, the surface of mesoporous silica MCM-41 which synthesized from pure silica was functionalized with amine group by grafting. The functionalized sample was characterized by X-ray powder diffractometer (XRD), thermogravimetry/differential thermal analysis (TG/DTA) and Fourier transform infrared spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET). The CO2 adsorption capacity of the functionalized and non-functionalized MCM-41 adsorbents was determined at 25, 75 and 100°C by TG/DTA equipment. As a result, it was seen that the functionalized MCM-41 has higher adsorption capacity.

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Section: Introductionunclassified

Amin Grupları ile Fonksiyonelleştirilmiş MCM-41 Mezogözenekli Silika Üzerine CO2 Adsorpsiyonu

Yılmaz

2017

SDÜ Fen Bil Enst Der

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“…SO x is responsible for the formation of acid rain, corrosion of metal structures and is harmful to human and other living organisms (Hogan 2010;Holleman and Wiberg 2001). Removal of H 2 S from a gas stream could be accomplished by adsorption onto a solid surface (Srivastav and Srivastava 2009;Samadi-Maybodi et al 2011;Wang et al 2012;Ko et al 2004), catalytic oxidation and absorption using a liquid solution (Morais Batista et al 2010;Corma et al 1995). However, the majority of these techniques show some drawbacks.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, high surface area activated carbons are expensive, and the catalytic oxidation materials (Morais Batista et al 2010) and liquid solution could cause secondary pollution after invalidation. Liquid-phase chemical scrubbing with amines suffers from inherently high regeneration cost and inefficiency (Corma et al 1995). Many materials have been developed for H 2 S adsorption from a great amount of industrial gas effluent streams (Untea et al 2009;Subrenat et al 2008;Bagreev et al 2004;Polychronopoulou et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Removal of H2S from crude oil via stripping followed by adsorption using ZnO/MCM-41 and optimization of parameters

Hazrati

Abdouss

Vahid³

et al. 2014

Int. J. Environ. Sci. Technol.

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In the present work, H 2 S of crude oil was removed via a two-step method including stripping followed by adsorption. First, ZnO/MCM-41 adsorbents containing 5, 17.5 and 30 wt% of zinc were synthesized and characterized using XRD and nitrogen physisorption. Then, these materials were used as adsorbents for the removal of the H 2 S stripped from crude oil. At second step, the H 2 S of crude oil was extracted to gas phase by hot stripping. The obtained extract was collected in a storage tank for the subsequent H 2 S adsorption process. A threefactor Box-Behnken design with five center points and one response was performed for the optimization of adsorption of H 2 S. The influence of process parameters and their interactional effects on the adsorption of H 2 S were analyzed using the obtained adsorption experimental data. A model including three important factors, i.e., temperature, space velocity and amount of supported zinc and their interactions, was developed to generate the optimum condition. The point of Zn = 30 wt%, T = 300°C and space velocity = 3,000 h -1 had the optimum point with the highest break point time (t bp = 973 min).

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“…Corma et al [25] have reported that mesoporous aluminosilicate MCM-41 is a good catalyst for mild hydrocracking of gas oil. A combination of large surface area, large pore size to allow diffusion of bulky molecules, together with the presence of mild acidity and high stability, result in superior HDS, HDN and hydrocracking performance than zeolite and alumina supported catalysts.…”

Section: Introductionmentioning

confidence: 99%

TiO2-ZrO2 Binary Oxides for Effective Hydrodesulfurization Catalysts

Tiwari¹

2012

TOCATJ

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Titania-zirconia mixed oxide was developed as support for Mo, CoMo and NiMo catalysts. Synthesis was carried out using evaporation induced self assembly and modified sol-gel templating route. The samples were calcined in a temperature range of 400 o C to 600 o C. SEM and porosity analyses were used to ensure that the mesostructure is stable after Mo and promoter incorporation. Wide-angle XRD was used to verify MoO 3 (and MoS 2 ) dispersion, which indicated crystallite size <40Å up to 8wt% Mo loading. The IR spectral studies were used to determine the nature of Mo species (octahedral and tetrahedral). TPD study was used to determine the acidity of the supports. The physico-chemical properties were correlated with the catalytic hydrodesulfurization reaction. CoMo and NiMo catalysts were compared in order to gain an insight into the promoter effect on direct desulfurization pathways. A comparison with -Al 2 O 3 , SBA-15 and KIT-6 supported catalysts shows much superior activities of mesoporous titania-zirconia supported catalysts which is attributed to favorable metal-support interactions in case of mesoporous titania-zirconia supported catalysts.

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Hydrocracking of Vacuum Gasoil on the Novel Mesoporous MCM-41 Aluminosilicate Catalyst

Cited by 383 publications

References 0 publications

Amin Grupları ile Fonksiyonelleştirilmiş MCM-41 Mezogözenekli Silika Üzerine CO2 Adsorpsiyonu

Amin Grupları ile Fonksiyonelleştirilmiş MCM-41 Mezogözenekli Silika Üzerine CO2 Adsorpsiyonu

Removal of H2S from crude oil via stripping followed by adsorption using ZnO/MCM-41 and optimization of parameters

TiO2-ZrO2 Binary Oxides for Effective Hydrodesulfurization Catalysts

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