Synthesis of supported and unsupported NiMo carbides and their properties for the catalytic hydrocracking of n-octane
Creators
- 1. Instituto Tecnologico de Ciudad Madero, Division de Estudios de Posgrado e Investigacion, Juventino Rosas y Jesus Urueta S/N, Colonia Los Mangos, CP 89440, Ciudad Madero, Tamaulipas (Mexico)
- 2. Instituto Mexicano del Petroleo, Molecular Engineering Program, 152 Eje Central L Cardenas, 07730 San Bartolo Atepehuacan, Delegacion Gustavo A Madero, Mexico DF (Mexico)
Description
Unsupported and γ-Al2O3-, MCM-41-supported (Ni, Mo) carbides were prepared and modified by 'in situ' polymer (PAN: polyacrylonitrile) pyrolysis. The supported catalysts were impregnated with Ni and Mo metals, i.e. 2.8 atom Mo/nm2, whose atomic ratio was Ni/Ni+Mo = 0.5. X-ray diffraction (XRD) showed single NiC, MoC phases in all cases, with relatively low surface areas, as verified by N2 adsorption (BET). The catalytic behaviour of the supported (Ni, Mo)C phases for n-C8 hydrocracking depended on the support type. (Ni, Mo)C/MCM41-PAN-P (P = pyrolyzed) showed a total conversion of 40% while it was only 15% on Ni,MoC/γ-Al2O3. The most active catalysts were (Ni, Mo)C unsupported catalysts, i.e., 90% total conversion. In all cases the hydrocracking selectivity favoured lighter hydrocarbons (C1-C4)
Availability note (English)
Available online at http://stacks.iop.org/0953-8984/16/S2329/cm4_22_035.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-8984/16/S2329/cm4_22_035.pdf; http://www.iop.org/;
- DOI
- 10.1088/0953-8984/16/22/035;
- PII
- S0953-8984(04)76423-1;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 16
- Journal Issue
- 22
- Journal Page Range
- p. S2329-S2334
- ISSN
- 0953-8984
- CODEN
- JCOMEL
Conference
- Title
- 2. international conference on applied statistical physics molecular engineering
- Acronym
- ASTATPHYSMEX-2003
- Dates
- 24-29 Aug 2003
- Place
- Puerto Vallarta (Mexico)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36004637
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ADSORPTION; ALUMINIUM OXIDES; CATALYSTS; HYDROCRACKING; MOLYBDENUM CARBIDES; NICKEL CARBIDES; OCTANE; ORGANIC POLYMERS; SURFACE AREA; SYNTHESIS; X-RAY DIFFRACTION
- Descriptors DEC
- ALKANES; ALUMINIUM COMPOUNDS; CARBIDES; CARBON COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; COHERENT SCATTERING; CRACKING; DECOMPOSITION; DIFFRACTION; HYDROCARBONS; MOLYBDENUM COMPOUNDS; NICKEL COMPOUNDS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POLYMERS; PYROLYSIS; REFRACTORY METAL COMPOUNDS; SCATTERING; SORPTION; SURFACE PROPERTIES; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPOUNDS