II International Symposium on Carbon for Catalysis ABSTRACTS

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OP-I-15 PREPARATION OF CATALYSTS BY ANCHORING METAL COMPLEXES ONTO MESOPOROUS CARBONS Figueiredo J.L. 1 , Mahata N. 1 , Pereira M.F.R. 1 , Jarrais B. 1,2 , Silva A.R. 2 , de Castro B. 2 , Freire C. 2 1 Laboratório de Catálise e Materiais, Faculdade de Engenharia, Universidade do Porto. 4200-465, Porto, Portugal 2 REQUIMTE, Departamento de Química, Faculdade de Ciências, Universidade do Porto. 4169-007, Porto, Portugal e-mail: jlfig@fe.up.pt Carbon materials are good catalyst supports especially for liquid phase reactions, since they present some advantages over conventional supports, such as higher stability in acid and basic media. In addition, both their porous texture and surface chemistry can be modified by appropriate methodologies. We have been using different strategies for the immobilization of metal complexes with salen ligands onto activated carbons, and the resulting catalysts proved to be efficient and reusable in various reactions [1-8]. However, they were found to be, in general, less active than the corresponding homogeneous catalysts, as a result of the slow diffusion of reactants in the micropores of activated carbon supports. This limitation can be overcome by using mesoporous materials instead, such as carbon xerogels. Carbon xerogels (CX) were synthesized by the conventional sol-gel approach using formaldehyde and resorcinol [9]. The wet gel was dried by two different procedures followed by carbonization, leading to carbon xerogels with different textural properties: Direct drying (sample 01CX-UA with pores in the range 30-100 nm) and drying after solvent exchange (sample 02CX-UA with pores in the range 15-30 nm). A subsequent oxidation treatment introduces functional groups on the surface [10,11], which can be used as sites to anchor the metal complexes. These samples are designated as 01CX-y and 02CX-y, where y indicates the degree of burn-off (%). Textural characterization of these supports was based on the analysis of nitrogen adsorption isotherms by the t-plot, while the surface groups were determined by TPD-MS [11]. The salen ligands and their manganese (<strong>II</strong>I) complexes were synthesized according to the procedures already described [4,5,8]. Mn (<strong>II</strong>I) complexes were directly immobilized onto the supports by refluxing with N,N’-dimetilformamide solutions of the complexes [4,5,8]. After 66
OP-I-15 removing the physically adsorbed complex, the materials were dried at 120°C. Similar procedures were used to anchor a chiral Mn (<strong>II</strong>I) complex. These catalysts were tested in the epoxidation of alkenes at room temperature. Table 1 summarizes the properties of the materials prepared. The results suggest that Mn(<strong>II</strong>I) salen complexes with hydroxyl functionalised ligands are immobilised onto the oxidised carbon xerogels through reaction of the hydroxyl group with some of the oxygen functional groups on the surface, such as phenols, anhydrides and carbonyls. Table 1 – Catalyst and Support Characterization SAMPLES S BET S meso V micro CO CO 2 (m2/g) (m2/g) (cm3/g) (μmol/g) (μmol/g) 01CX-UA 645 216 0.094 234 98 Mn@01CX-UA - - - - - 01CX-03 736 215 0.140 4714 478 Mn@01CX-03 603 218 0.080 - - 02CX-UA 598 406 0.076 282 65 Mn@02CX-UA - - - - - 02CX-10 786 425 0.151 2556 180 Mn@02CX-10 598 382 0.075 - - η%= quantity of Mn immobilised x 100 / initial quantity of Mn in solution Mn (μmol/g) - 21.8 - 98.3 - 12.0 - 80.1 η% - 11.8 - 53.1 - 6.5 - 43.3 Acknowledgements: This work was supported by FCT and FEDER, through the Programme POCI 2010 (Contract POCI/EQU/57369/2004). References [1] A.R. Silva, C. Freire, B. de Castro, M.M.A. Freitas, J.L. Figueiredo. Microporous Mesoporous Mater. 2001; 46: 211. [2] A.R. Silva, M. Martins, M.M.A. Freitas, A. Valente, C. Freire, B. de Castro, J.L. Figueiredo. Microporous Mesoporous Mater. 2002; 55: 275. [3] A.R. Silva, C. Freire, B. de Castro, M.M.A. Freitas, J.L. Figueiredo, Langmuir 2002; 18: 8017. [4] A.R. Silva, J. Vital, J.L. Figueiredo, C. Freire, B. de Castro, New J. Chem. 2003; 27: 1511. [5] A.R. Silva, J.L. Figueiredo, C. Freire, B. de Castro, Microporous Mesoporous Mater. 2004; 68: 83. [6] A.R. Silva, M. Martins, M.M.A. Freitas, C. Freire, B. de Castro, J.L. Figueiredo, Eur. J. Inorg. Chem. 2004, 2027. [7] A.R. Silva, J.L. Figueiredo, C. Freire, B. de Castro, Catal. Today 2005; 102-103: 154. [8] M. Cardoso, A.R. Silva, B. de Castro, C. Freire, Applied Catal. A: Gen. 2005; 285: 110. [9] R.W. Pekala, J. Mater. Sci. 1989 ; 24: 3221. [10] P.V. Samant, F. Gonçalves, M.M.A. Freitas, M.F.R. Pereira, J.L. Figueiredo, Carbon 2004; 42: 1321. [11] J.L. Figueiredo, M.F.R. Pereira, M.M.A. Freitas, J.J.M. Òrfão, Carbon 1999; 37: 1379. 67
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Boreskov Institute of Catalysis of
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ORGANIZING COMMITTEE Chairman: Vlad
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CATALYSTS ON CARBON MATERIALS BASIS
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PREPARATION OF CARBON FILMS ON CERA
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PL-2 polymer gas separation membran
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CHARACTERIZATION OF POROUS STRUCTUR
Page 15 and 16: ROLE OF CARBON POROSITY AND FUNCTIO
Page 17: KEYNOTE LECTURES
Page 20 and 21: KL-1 governed by the equation of th
Page 22 and 23: KL-2 NITROGEN DOPED CARBON NANOFIBE
Page 24 and 25: KL-3 CARBON BASED STRUCTURED CATALY
Page 26 and 27: KL-4 The strong mesoporous carbons
Page 28 and 29: KL-5 NANOSTRUCTURED CARBONS FOR THE
Page 30 and 31: KL-6 THEORY OF MECHANICAL BEHAVIOR
Page 32 and 33: KL-7 MOLECULAR STRUCTURE EFFECT OF
Page 34 and 35: Presentation of FGUP “ENPO Neorga
Page 37 and 38: OP-I-1 COBALT ON CARBON NANOFIBER C
Page 39 and 40: OP-I-1 from 41 to 23 %, while the C
Page 41 and 42: OP-I-2 loading. It is also interest
Page 43 and 44: OP-I-3 5 nm 50 nm Figure 1: PtRu/MW
Page 45 and 46: OP-I-4 As it can be seen, potassium
Page 47 and 48: OP-I-5 [A] ⇔ A+[ ] (5) Kinetic an
Page 49 and 50: Results and discussion OP-I-6 The T
Page 51 and 52: OP-I-7 product selectivity). The an
Page 53 and 54: OP-I-8 After introduction of the me
Page 55 and 56: OP-I-9 Hydrogenations were carried
Page 57 and 58: OP-I-10 activated with CO 2 . In al
Page 59 and 60: OP-I-11 from Jaroszów deposit, Low
Page 61 and 62: OP-I-12 The carbon matrix avoids th
Page 63 and 64: OP-I-13 • thermal destruction of
Page 65: OP-I-14 hexanol (AA) was anchored t
Page 69 and 70: OP-I-16 surface concentration of HE
Page 71 and 72: Our analysis of the chemical activi
Page 73 and 74: OP-I-18 running. The TEM reveals th
Page 75 and 76: OP-I-19 explore the role of CNF sur
Page 77 and 78: pH 10 8 6 4 2 0 2 4 6 8 10 ml HCl a
Page 79 and 80: OP-I-21 resorcinol to catalyst mola
Page 81 and 82: OP-I-22 AS in the catalysts examine
Page 83 and 84: OP-I-23 polyfunctional surface cove
Page 85 and 86: OP-I-24 as sibunite and nanofibrous
Page 87 and 88: OP-I-25 is a consequence of the mac
Page 89 and 90: OP-I-27 THE CARBON FILMS ON Pt(111)
Page 91 and 92: OP-I-28 LASER RAMAN MICRO-SPECTROSC
Page 93 and 94: OP-I-29 ELECTROCATALYTIC PROPERTIES
Page 95 and 96: OP-II-1 SYNTHESIS
Page 97 and 98: OP-II-2 SYNTHESIS,
Page 99 and 100: TOWARDS LARGE SCALE PRODUCTION OF C
Page 101 and 102: CO-CARBONIZATION OF POLYMERS - NEW
Page 103 and 104: OP-II-5 3. Results
Page 105 and 106: OP-II-6 pore size
Page 107 and 108: OP-II-7 their adva
Page 109 and 110: OP-II-8 effect, el
Page 111 and 112: OP-II-9 Therefore,
Page 113 and 114: OP-II-10 The dehyd
Page 115: OP-II-11 a result
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INVESTIGATION OF THE ELECTROCHEMICA
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SURFACE ELECTROCHEMISTRY OF CARBON
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TEMPLATED SYNTHESIS OF NOBLE METAL
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PROPERTIES AND STRUCTURE OF SORBENT
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CATALYSIS DURING SULPHUR COALS PROC
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ORDERED MESOPOROUS CARBONS SYNTHESI
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PP-I-7 INFLUENCE OF FUNCTIONALIZATI
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PP-I-8 AROMATIZATION OF 5-PHENYL-PI
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N 2 O CONVERSION USING BINARY MIXTU
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PP-I-9 [8] F. Gonçalves, G.E. Marn
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PP-I-10 The Table 1 demonstrates th
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PP-I-11 We suppose that the active
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PP-I-12 Activation with steam promo
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PP-I-13 separation of bundles forme
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PP-I-14 temperature at which the ma
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PP-I-15 Titania was prepared by hyd
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PP-I-16 A B Figure 1. SEM images co
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PP-I-17 the carbon matrix has been
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PP-I-18 0.9 0.8 0.7 0.6 lg (ΔV/ΔR
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PP-I-19 Electron-microscopic studie
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PP-I-20 time on stream increased fr
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CARBON-SUPPORTED 12-MOLYBDOPHOSPHOR
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PP-I-23 CARBON SUPPORTS FOR IMMOBIL
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PP-I-24 example, in the polymer ele
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PP-I-25 of microporous structure wa
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PP-I-26 contain at first. Non-oxida
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PP-I-27 this reaction and that the
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CONTROLLING DIAMETER AND PRESENCE O
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INFLUENCE OF GAS OXIDATIVE TREATMEN
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PP-I-30 EXPERIMENTAL VALUES OF THE
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PP-I-30 Acknowledgements The author
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PP-I-31 suspensions of UFD had low
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PP-I-32 It was detected, that precu
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PP-I-33 consistence of the process,
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PP-I-34 practically identical [2],
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PP-I-35 • surface porosity (P 245
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PP-I-36 (COOH+OH), mg-eq/g 1,8 1,2
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PP-I-37 As one can see in the table
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PP-I-38 hydrogenation (61 o and 65
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PP-I-39 Ensembles №№ 31, 45, 55
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PP-I-40 The pore structure of origi
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PP-I-41 Sr 2+ and Ba 2+ ions are in
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PP-I-42 volume are formed from init
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PP-I-43 30 wt% Pt-15 wt% Ru/NCM cat
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PP-I-44 Figure 1. From left to righ
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PP-I-45 Table 1: Characteristics of
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PP-I-45 The search for alternative
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PP-I-46 zeroth moment expression, w
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PP-I-47 It was revealed, that the i
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PP-I-48 Table 1 Characteristics of
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PP-I-49 4-Carboxybenzaldehyde (4-CB
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PP-I-50 Computational details First
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PP-I-51 The result showed that surf
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PP-II-1 COOH COO(C
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PP-II-2 The result
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PP-II-3 prepared,
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PP-II-4 CNF from b
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PP-II-5 support; t
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PP-II-6 The main p
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PP-II-7 porous net
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PP-II-8 It is note
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PP-II-9 selective
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STABILITY OF A CARBON CATALYST FLUI
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PP-II-11 CARBON FI
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PP-II-12 CATALYTIC
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THE SORBENTS FOR AIR CLEANING PREPA
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MACRO-SHAPING OF CARBON NANOFIBERS
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PP-II-15 MESOPOROU
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PP-II-16 EVALUATIO
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PP-II-16 As it wou
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PP-II-17 with exis
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PP-II-18 Thus, the
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PP-II-19 (NaOH, Cs
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PP-II-20 MEDICAL C
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PP-II-21 Pt /AC an
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PP-II-22 Prelimina
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FACTORS DETERMINING THE CATALYTIC P
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NANOPOROUS CARBON MATERIALS AS EFFE
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CARBON NANOSTRUCTURAL MATERIALS PRO
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GROWTH OF CARBON NANOFIBERS ON META
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ACTIVE CARBON AS SUPPORT FOR IMMOBI
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PP-II-28 USING OF
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AKSOYLU Ahmet Erhan Department of C
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DIDENKO Olga Pisarzhevskii Institut
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KOGAN Victor M. Zelinsky Institute
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NOUGMANOV Evgeniy Lomonosov Moscow
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SERP Philippe INPToulouse 118 Route
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ZAITSEV Yurij P. Institute for Sorp
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steel, Hastelloy C22, Titanium, Tan
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Условия эксплуатац
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DONAU LAB MOSCOW ПРОГРАММА
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CONTENT PLENARY LECTURES...........
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OP-I-12 Maldonado-Hódar F.J., Carr
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OP-II-8 Isse A.A.,
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PP-I-21 Karaseva M.S., Perederiy M.
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PP-I-47 Zaitsev Yu., Zhuravsky S.,
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PP-II-21 Özkara S
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II International Symposium on Carbon for Catalysis ABSTRACTS

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