Valentin VALTCHEV

Contactez-nous! +33 (0)2 31 45 28 21

lcs@ensicaen.fr

Directeur de Recherche

Phone:

+ 33 (0)2 31 45 27 33

Location:

Bâtiment C – 230

Bibliographie

2018

Journal Articles

"Detection of CO2 and O2 by iron loaded LTL zeolite films."
Frontiers of Chemical Science and Engineering - 12, 1, 94-102 DOI : 10.1007/s11705-017-1692-5
Veselina Georgieva, Richard Retoux, Valerie Ruaux, Valentin Valtchev, and Svetlana Mintova

"Fast, Ambient Temperature and Pressure Ionothermal Synthesis of Three-Dimensional Covalent Organic Frameworks."
Journal of the American Chemical Society - 140, 13, 4494-4498 DOI : 10.1021/jacs.8b01320
Xinyu Guan, Yunchao Ma, Hui Li, Yusran Yusran, Ming Xue, Qianrong Fang, Yushan Yan, Valentin Valtchev, and Shilun Qiu

2017

Journal Articles

"High-Visible-Light Photoactivity of Plasma-Promoted Vanadium Clusters on Nanozeolites for Partial Photooxidation of Methanol."
ACS Applied Materials & Interfaces - 9, 21, 17846-17855 DOI : 10.1021/acsami.7b02161
Mohamad El Roz, Louwanda Lakiss, Igor Telegeiev, Oleg I. Lebedev, Philippe Bazin, Aurelie Vicente, Christian Fernandez, and Valentin Valtchev

"One-pot synthesis of silanol-free nanosized MFI zeolite."
Nature Materials - 16, 10, 1010-1015 DOI : 10.1038/nmat4941
Julien Grand, Siddulu Naidu Talapaneni, Aurélie Vicente, Christian Fernandez, Eddy Dib, Hristiyan A. Aleksandrov, Georgi N. Vayssilov, Richard Retoux, Philippe Boullay, Jean-Pierre Gilson, Valentin Valtchev, and Svetlana Mintova

"Three-Dimensional Ionic Covalent Organic Frameworks for Rapid, Reversible, and Selective Ion Exchange."
Journal of the American Chemical Society - 139, 49, 17771-17774 DOI : 10.1021/jacs.7b11283
Zonglong Li, Hui Li, Xinyu Guan, Junjie Tang, Yusran Yusran, Zhan Li, Ming Xue, Qianrong Fang, Yushan Yan, Valentin Valtchev, and Shilun Qiu

"Opening the Cages of Faujasite-Type Zeolite."
Journal of the American Chemical Society - 139, 48, 17273-17276 DOI : 10.1021/jacs.7b10316
Zhengxing Qin, Katie A. Cychosz, Georgian Melinte, Hussein El Siblani, Jean-Pierre Gilson, Matthias Thommes, Christian Fernandez, Svetlana Mintova, Ovidiu Ersen, and Valentin Valtchev

2016

Journal Articles

"A top-down approach to hierarchical SAPO-34 zeolites with improved selectivity of olefin."
Microporous and Mesoporous Materials - 234, 401-408
Xiaoxin Chen, Dongyang Xi, Qiming Sun, Ning Wang, Zhenyu Dai, Dong Fan, Valentin Valtchev, and Jihong Yu

"The preparation of hierarchical SAPO-34 crystals via post-synthesis fluoride etching."
Chem. Commun. - 52, 17, 3512-3515 DOI : 10.1039/C5CC09498D
Xiaoxin Chen, Aurélie Vicente, Zhengxing Qin, Valérie Ruaux, Jean-Pierre Gilson, and Valentin Valtchev

"A non-chemically selective top-down approach towards the preparation of hierarchical TS-1 zeolites with improved oxidative desulfurization catalytic performance."
Chem. Commun. - 52, 17, 3580-3583 DOI : 10.1039/C5CC10232D
Shuting Du, Xiaoxin Chen, Qiming Sun, Ning Wang, Mingjun Jia, Valentin Valtchev, and Jihong Yu

"Embryonic ZSM-5 zeolites: zeolitic materials with superior catalytic activity in 1,3,5-triisopropylbenzene dealkylation."
New J. Chem. - 40, 5, 4307-4313 DOI : 10.1039/C5NJ03310A
Kok-Giap Haw, Jean-Michel Goupil, Jean-Pierre Gilson, Nikolai Nesterenko, Delphine Minoux, Jean-Pierre Dath, and Valentin Valtchev

"Three-Dimensional Covalent Organic Frameworks with Dual Linkages for Bifunctional Cascade Catalysis."
Journal of the American Chemical Society - 138, 44, 14783-14788 DOI : 10.1021/jacs.6b09563
Hui Li, Qinying Pan, Yunchao Ma, Xinyu Guan, Ming Xue, Qianrong Fang, Yushan Yan, Valentin Valtchev, and Shilun Qiu

"Nanosized zeolites: Quo Vadis?"
Comptes Rendus Chimie - 19, 1, 183-191 DOI : 10.1016/j.crci.2015.11.005
Svetlana Mintova, Julien Grand, and Valentin Valtchev

"ZIF-derived in situ nitrogen decorated porous carbons for CO ₂ capture."
Inorg. Chem. Front. - 3, 9, 1112-1118 DOI : 10.1039/C6QI00158K
Ying Pan, Ming Xue, Mingyi Chen, Qianrong Fang, Liangkui Zhu, Valentin Valtchev, and Shilun Qiu

"The Mosaic Structure of Zeolite Crystals."
Angewandte Chemie International Edition - 55, 48, 15049-15052 DOI : 10.1002/anie.201608417
Zhengxing Qin, Georgian Melinte, Jean-Pierre Gilson, Maguy Jaber, Krassimir Bozhilov, Philippe Boullay, Svetlana Mintova, Ovidiu Ersen, and Valentin Valtchev

"Hierarchical zeolites."
MRS Bulletin - 41, 9, 689-693 DOI : 10.1557/mrs.2016.171
Svetlana Mintova and Valentin Valtchev

"Nanosized inorganic porous materials: fabrication, modification and application."
J. Mater. Chem. A - 4, 43, 16756-16770 DOI : 10.1039/C6TA04684C
Haoquan Zheng, Feifei Gao, and Valentin Valtchev

2015

Journal Articles

"Template-free nanosized faujasite-type zeolites."
Nature Materials - 14, 4, 447-451 DOI : 10.1038/nmat4173
Hussein Awala, Jean-Pierre Gilson, Richard Retoux, Philippe Boullay, Jean-Michel Goupil, Valentin Valtchev, and Svetlana Mintova

"Melanin Polymerization Held in Check: A Composite of Dihydroxyphenylalanine with Zeolite Beta."
The Journal of Physical Chemistry C - 119, 16, 8736-8747 DOI : 10.1021/acs.jpcc.5b01194
Meryem Bouchoucha, Frederik Tielens, Fabrice Gaslain, France CostaTorro, Sandra Casale, Ana Palcic, Valentin Valtchev, Jean-François Lambert, and Maguy Jaber

"Control of Na-EMT Zeolite Synthesis by Organic Additives."
Crystal Growth & Design - 15, 4, 1898-1906 DOI : 10.1021/acs.cgd.5b00071
Veselina Georgieva, Aurélie Vicente, Christian Fernandez, Richard Retoux, Ana Palcic, Valentin Valtchev, and Svetlana Mintova

"On the remarkable resistance to coke formation of nanometer-sized and hierarchical MFI zeolites during ethanol to hydrocarbons transformation."
Journal of Catalysis - 328, 165-172 DOI : 10.1016/j.jcat.2014.12.030
Louwanda Lakiss, Francis Ngoye, Christine Canaff, Sébastien Laforge, Yannick Pouilloux, Zhengxin Qin, Mehrad Tarighi, Karine Thomas, Valentin Valtchev, Aurélie Vicente, Ludovic Pinard, Jean-Pierre Gilson, and Christian Fernandez

"3D Study of the Morphology and Dynamics of Zeolite Nucleation."
Chemistry - A European Journal - 21, 50, 18316-18327 DOI : 10.1002/chem.201501919
Georgian Melinte, Veselina Georgieva, Marie-Anne Springuel-Huet, Andreï Nossov, Ovidiu Ersen, Flavien Guenneau, Antoine Gedeon, Ana Palcic, Krassimir N. Bozhilov, Cuong Pham-Huu, Shilun Qiu, Svetlana Mintova, and Valentin Valtchev

"Nanosized microporous crystals: emerging applications."
Chem. Soc. Rev. - 44, 20, 7207-7233 DOI : 10.1039/C5CS00210A
Svetlana Mintova, Maguy Jaber, and Valentin Valtchev

"Nanosized microporous crystals: emerging applications."
Chemical Society Reviews - DOI : 10.1039/C5CS00210A
Svetlana Mintova, M. Jaber, and Valentin Valtchev

"Formation mechanism of three-membered ring containing microporous zincosilicate RUB-17."
CrystEngComm - 17, 37, 7063-7069 DOI : 10.1039/C5CE01394A
Ana Palcic, Felipe Zapata Abellán, Aurelie Vicente, Christian Fernandez, Veselina Georgieva, Josip Broni?, and Valentin Valtchev

"Mesoporous zeolites by fluoride etching."
Current Opinion in Chemical Engineering - 8, 1-6 DOI : 10.1016/j.coche.2015.01.002
Zhengxing Qin, Jean-Pierre Gilson, and Valentin Valtchev

Conférence(s) Invitée(s)

"Post Synthesis Expansion of Pore Dimensions in Zeolites."
7th International Symposium - ,USA - 2015-05-03
Presented by Valentin Valtchev

Oraux

"Template-free nanosized faujasite-type zeolites."
31eme GFZ - St Valerie sur Somme,France - 2015-03-25
Presented by Hussein Awala with the help of R. Retoux, P. Boullay, Jean-Michel Goupil, Jean-Pierre Gilson, Svetlana Mintova, and Valentin Valtchev

"Operando AGIR and NNMF techniques applied to the study of coke formation on ZSM-5 catalysts with bimodal porosity."
GFZ - Saint Valery / Somme,France - 2015-03-26
Presented by Christian FERNANDEZ with the help of Louwanda Lakiss, Zhengxing Qin, Philippe Bazin, Karine Thomas, Aurelie Vicente, Jean-Pierre Gilson, Valentin Valtchev, Francis NGoye, and Ludovic Pinard

"Effect of the size of zeolite crystals on dimethyl ether synthesis from syngas over CuZnAl/ZSM-5. "
2 Euro-Asia Zeolite Conference - Nice,France - 2015-01-25
Presented by Vitaly V. Ordomsky with the help of Mengdie Cai, Ana Palcic, Simona Moldovan, Ovidiu Ersen, Valentin Valtchev, and Andrei Y. Khodakov

2014

Journal Articles

"In situ and post-synthesis control of physicochemical properties of FER-type crystals."
Microporous and Mesoporous Materials - 200, 334-342 DOI : 10.1016/j.micromeso.2014.07.057
Xiaoxin Chen, Totka Todorova, Alexandre Vimont, Valérie Ruaux, Zhengxing Qin, Jean-Pierre Gilson, and Valentin Valtchev

"Ultra-fast framework stabilization of Ge-rich zeolites by low-temperature plasma treatment."
CHEMICAL SCIENCE - 5 (1): 68-80 DOI : 10.1039/c3sc51892b
Mohamad El-Roz, Louwanda Lakiss, Aurelie Vicente, Krassimir Bozhilov, Frédéric Thibault-Starzyk, and Valentin Valtchev

"Silicate ionic liquid synthesis of zeolite merlinoite: Crystal size control from crystalline nanoaggregates to micron-sized single-crystals."
Microporous and Mesoporous Materials - 198, 35-44 DOI : 10.1016/j.micromeso.2014.07.011
Mohamed Haouas, Louwanda Lakiss, Charlotte Martineau, Jaafar El Fallah, Valentin Valtchev, and Francis Taulelle

"Crystal Growth Kinetics as a Tool for Controlling the Catalytic Performance of a FAU-Type Basic Catalyst."
ACS Catalysis - 4, 7, 2333-2341 DOI : 10.1021/cs500153e
Satoshi Inagaki, Karine Thomas, Valérie Ruaux, Guillaume Clet, Toru Wakihara, Shoma Shinoda, Sae Okamura, Yoshihiro Kubota, and Valentin Valtchev

"Rediscovering zeolite mechanochemistry – A pathway beyond current synthesis and modification boundaries."
Microporous and Mesoporous Materials - 194, 106-114 DOI : 10.1016/j.micromeso.2014.04.006
Gerardo Majano, Lars Borchardt, Sharon Mitchell, Valentin Valtchev, and Javier Pérez-Ramírez

"Mitigating coking during methylcyclohexane transformation on HZSM-5 zeolites with additional porosity."
Journal of Catalysis - 320, 118-126 DOI : 10.1016/j.jcat.2014.10.001
F. Ngoye, Louwanda Lakiss, Z. Qin, S. Laforge, C. Canaff, M. Tarighi, Valentin Valtchev, Karine Thomas, Aurelie Vicente, Jean-Pierre Gilson, Y. Pouilloux, Christian Fernandez, and L. Pinard

"The role of external acid sites of ZSM-5 in deactivation of hybrid CuZnAl/ZSM-5 catalyst for direct dimethyl ether synthesis from syngas."
Applied Catalysis A: General - 486, 266-275 DOI : 10.1016/j.apcata.2014.08.030
V.V. Ordomsky, M. Cai, V. Sushkevich, S. Moldovan, O. Ersen, C. Lancelot, Valentin Valtchev, and A.Y. Khodakov

"Comparative Study of Nano-ZSM-5 Catalysts Synthesized in OH- and F- Media."
ADVANCED FUNCTIONAL MATERIALS - 24 (2, SI): 257-264 DOI : 10.1002/adfm.201301541
Zhengxing Qin, Louwanda Lakiss, Lubomira Tosheva, Jean-Pierre Gilson, Aurelie Vicente, Christian Fernandez, and Valentin Valtchev

"Structure analysis of zeolites by rotation electron diffraction (RED)."
Microporous and Mesoporous Materials - 189, 115-125 DOI : 10.1016/j.micromeso.2013.10.014
Elina Kapaca, Jie Su, Leifeng Liu, Veselina Georgieva, Wei Wan, Junliang Sun, Valentin Valtchev, Sven Hovmöller, and Xiaodong Zou

Conférence(s) Invitée(s)

"Expanding pore dimensions in microporous crystals."
Workshop: Synthesis and Characterization of Nano-materials - Bulgaria - 2014-04-03
Presented by Valentin Valtchev

"Mesoporous zeolites by fluoride route."
ACS Meeting - ,USA - 2014-08-10
Presented by Valentin Valtchev with the help of Zhengxing Qin

"Zeolites with Improved Accessibility."
BP Workshop: Catalysis Synthesis and Activation - UK - 2014-07-17
Presented by Valentin Valtchev

Oraux

"How the hierarchization process impacts the catalytic activity of ZSM-5 during the MTO reaction. "
FEZA ; 6eme ; Leipzig ; Germany ; 8 - 11 Septembre 2014
Presented by Christian FERNANDEZ with the help of Louwanda Lakiss, Zhengxing Qin, Jean-Pierre Gilson, Karine Thomas, Valentin Valtchev, and Aurélie Vicente

"Comparative study of the methods of post-synthesis modification of Ge-Silicate molecular sieves."
GFZ ; 30 eme ; Ile de Ré ; 19-21 Mars 2014
Presented by Veselina Georgieva with the help of S. Qiu, and Valentin Valtchev

"Integrating synthesis and post-synthetic chemical etching for secondary porosity engineering in zeolite framework."
FEZA ; 6eme ; Leipzig ; Germany ; 8 - 11 Septembre 2014
Presented by Zhengxing Qin with the help of Sandra Casale, Jean-Pierre Gilson, and Valentin Valtchev

"X-ray amorphous zeolites."
Second International Conference Advanced Functional materials - ,Bulgaria - 2014-09-04
Presented by Valentin Valtchev

Book / Book Section

Topics in Chemistry and Material Science: Advanced Micro- and Mesoporous Materials..
Edited by K. Hadzhiivanov, G. Vayssilov, Valentin Valtchev, and Svetlana Mintova Sofia: Heron Press Science Series, Heron Press Ltd

"Halting Oxidation of Palm Oil with Eco-friendly Zeolites."
In Topics in Chemistry and Material Science: Advanced Micro- and Mesoporous Materials, Edition: 7, edited by K. Hadjiivanov, Valentin Valtchev, Svetlana Mintova, and G. Vayssiilov, 13, 102-108
K-H. Tan, E-P. NG, Hussein Awala, R.R. Mukti, K-L. Wong, S.K. Yeong, and

Patent

"Method for the preparation of a synthetic faujasite material comprising monodisperse nanoparticles composed of single nanocrystals."
PCT/FR2013/053285 application (2014), assigned to CNRS -
Hussein Awala, Svetlana Mintova, Valentin Valtchev, and Jean-Pierre Gilson

"Catalyst compositions comprising small size molecular sieves crystals deposited on a porous material."
EP 13175185 (2014), assigned to Total France & CNRS -
E. Haw, Valentin Valtchev, Jean-Pierre Gilson, Jean-Michel Goupil, N. Nesterenko, D. Minoux, and J.P. Dath