Hydrogenation of Aromatics in Diesel Fuels on Pt/MCM-41 Catalysts

Corma, Avelino; Martı́nez, Agustı́n; Martínez‐Soria, Vicente

doi:10.1006/jcat.1997.1737

Cited by 246 publications

(116 citation statements)

References 33 publications

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“…Platinum supported on USY-zeolite used for the hydrogenation of benzene showed higher turnover numbers than traditional supports such as titania and alumina [26]. The authors explain that this phenomena might be related to platinum forming clusters inside the zeolite cage instead of having high dispersity throughout the structure.…”

Section: Bifunctional Catalysis: Platinum Group Metals Supported On Zmentioning

confidence: 95%

“…The authors explain that this phenomena might be related to platinum forming clusters inside the zeolite cage instead of having high dispersity throughout the structure. Interactions between these clusters and strong Brønsted acid sites of the zeolite form electron deficient platinum atoms, leading to enhanced hydrogenation and improved sulfur tolerance [26].…”

Section: Bifunctional Catalysis: Platinum Group Metals Supported On Zmentioning

confidence: 99%

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Hydropyrolysis of Lignin Using Pd/HZSM-5

Jan

Marchand

Anjos³

et al. 2015

Energy Fuels

107

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Hydropyrolysis of Lignin using Pd/HZSM-5 Oliver D. Jan Chair of the Supervisory Committee:Dr. Fernando Resende School of Environmental and Forest SciencesThe aim of this work was to study the formation of cycloalkanes from hydropyrolysis of lignin with HZSM-5 and Pd/HZSM-5 catalysts. We observed that palladium supported on HZSM-5 catalyzed hydrogenation and deoxygenation reactions that converted phenolic compounds into aromatic hydrocarbons and cycloalkanes. This study analyzed the effect of the catalyst-to-lignin ratio, H 2 partial pressure, and temperature on the yields of hydrocarbons with HZSM-5 and Pd/HZSM-5. Pd/HZSM-5 produced 44% more aromatic hydrocarbons than HZSM-5 at a catalyst-to-lignin ratio of 20:1, 650ºC, and a constant H 2 partial pressure of 1.7 MPa. The presence of palladium led to significant difference in yields only at 1.7 MPa H 2 partial pressure.In both the in-situ and ex-situ experiments conducted, hydropyrolysis temperature played a substantial role in the equilibrium conversion of hydrogenation reactions that led to cycloalkanes directly from lignin.iv Dedication This thesis is dedicated to my family for all their love and support v Acknowledgements

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Section: Bifunctional Catalysis: Platinum Group Metals Supported On Zmentioning

confidence: 95%

Section: Bifunctional Catalysis: Platinum Group Metals Supported On Zmentioning

confidence: 99%

Hydropyrolysis of Lignin Using Pd/HZSM-5

Jan

Marchand

Anjos³

et al. 2015

Energy Fuels

107

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“…Supported noble metals have been used as HDS catalysts in alternative to the traditional CoMo systems [1][2][3]. Due to their elevated hydrogenation activity, the Pd-and Pt-based catalysts are particularly suitable for deep HDS involving hydrogenation of the aromatic hydrocarbon as a preliminary step to the C-S cleavage [4].…”

Section: Introductionmentioning

confidence: 99%

Structure control of silica-supported mono and bimetallic Au–Pt catalysts via mercapto capping synthesis

Parola

Kantcheva

Milanova

et al. 2013

Journal of Catalysis

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a b s t r a c tSiO 2 -supported monometallic and bimetallic platinum-gold catalysts are prepared by deposition of metal nanoparticles stabilized by mercaptopropyltriethoxysilane (MPTES) after different aging time of the solution containing metal ions and MPTES. The materials are tested in the hydrodesulfurization (HDS) reaction of thiophene and compared with corresponding catalysts prepared by the conventional deposition-precipitation (DP) method. The monometallic Pt and the bimetallic Au-Pt prepared by DP have comparable activity. With respect to the platinum catalyst prepared by DP, the corresponding platinum catalyst prepared by MPTES particle stabilization exhibits a substantial enhancement of the activity regardless the solution aging time. On the contrary, the MPTES-assisted Au-Pt catalysts have different activities, depending on the solution aging time, with the most active being the one obtained with the 5-day-aged solution. In accord with XRD, XPS, and FTIR, the aging time of the solution, through the different interaction of Pt or Au precursors with the mercapto groups, has a crucial effect on the structure and on the surface of the catalysts. The observed differences in the catalytic activity are related to the structural and compositional changes of the bimetallic particles.

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“…Conventional hydrotreating catalysts containing sulfided mixed oxides (NiMo, NiW, CoMo) cannot accomplish a deep level of aromatic saturation in a single-step process because of thermodynamic limitations at their high reaction temperatures [3,4]. Recently, studies have focused on noble metal-based catalysts for hydrogenation in a two-step process [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

A novel Ni2Mo3N/MCM41 catalyst for the hydrogenation of aromatics

Wang

Zhang

et al. 2005

Catal Lett

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Bulk and MCM41-supported Ni 2 Mo 3 N catalysts were prepared using a temperature-programmed reduction (TPR) method and characterized using XRD, TEM, ICP-AES, and N 2 adsorption analysis techniques. Their catalytic properties were measured for the simultaneous hydrogenation of p-xylene and naphthalene and compared with Ni/MCM41 and Mo 2 N/MCM41 catalysts having similar metal loadings. The results indicate that the Ni 2 Mo 3 N/MCM41 catalyst exhibits excellent deep hydrogenation activity under mild condition (T = 483 K, P = 3.0 MPa), and that it is more active than either Ni/MCM41 or Mo 2 N/MCM41 catalyst.

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Hydrogenation of Aromatics in Diesel Fuels on Pt/MCM-41 Catalysts

Cited by 246 publications

References 33 publications

Hydropyrolysis of Lignin Using Pd/HZSM-5

Hydropyrolysis of Lignin Using Pd/HZSM-5

Structure control of silica-supported mono and bimetallic Au–Pt catalysts via mercapto capping synthesis

A novel Ni2Mo3N/MCM41 catalyst for the hydrogenation of aromatics

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