A5027809726- Catalytic Processes in Materials Science
- Thermal and Kinetic Analysis
- Catalysts for Methane Reforming
- Energetic Materials and Combustion
- Catalysis for Biomass Conversion
- Catalysis and Hydrodesulfurization Studies
- Thermochemical Biomass Conversion Processes
- Chemical Thermodynamics and Molecular Structure
- Nanomaterials for catalytic reactions
- Catalysis and Oxidation Reactions
- Carbon dioxide utilization in catalysis
- Ammonia Synthesis and Nitrogen Reduction
- Mining and Gasification Technologies
- Chemistry and Chemical Engineering
- CO2 Reduction Techniques and Catalysts
- Chemical Looping and Thermochemical Processes
- Polymer Science and PVC
- Adsorption and Cooling Systems
- Membrane-based Ion Separation Techniques
- Environmental and Industrial Safety
- Free Radicals and Antioxidants
- Iron and Steelmaking Processes
- Coal Combustion and Slurry Processing
- Materials Engineering and Processing
- Phase Change Materials Research
University of Silesia in Katowice
2015-2024
Silesian University of Technology
2003-2017
Petrol (Poland)
2003
The paper introduces spatially stable Ni-supported bimetallic catalysts for CO2 methanation. are a combination of sintered nickel mesh or wool fibers and nanometal particles, such as Au, Pd, Re, Ru. preparation involves the forming sintering into shape then impregnating them with metal nanoparticles generated by silica matrix digestion method. This procedure can be scaled up commercial use. catalyst candidates were analyzed using SEM, XRD, EDXRF tested in fixed-bed flow reactor. best results...
Abstract For experimental data obtained under different reaction/process conditions over time or temperature, the kinetic compensation effect (KCE) can be expected. Under dynamic (nonisothermal) conditions, at least two analytical pathways forming KCE were found. Constant heating rate ( q = const) and variable conversion degrees α var) lead to a vertical source of KCE, called isochronal effect. In turn, for constant degree const), we obtain an isoconversional isothermal (analyzed as...
In this paper we report a new nanometallic, self-activating catalyst, namely, Ni-supported Pd nanoparticles (PdNPs/Ni) for low temperature ammonia cracking, which was prepared using novel approach involving the transfer of from intermediate carrier, i.e. nano-spherical SiO2, to target carrier technical grade Ni (t-Ni) or high purity (p-Ni) grains. The method that developed allows uniform nanoparticle size distribution (4,4±0.8 nm) be obtained. Unexpectedly, t-Ni-supported NPs, seemed have...
Syngas to methane conversion can be attained in flow at temperatures starting from −7 °C with a hybrid bimetallic Ru/Ni catalyst. In turn, the ultra-low temperature effect cannot observed for Re/Ni and Pd/Ni combinations.
In this study, we investigated the catalytic performance of Ru nanoparticles (NPs) supported on Ni-nanowires for first time. This appears to be a highly efficient catalyst low-temperature methanation, e.g., ca. 100% conversion and CH4 selectivity can achieved at 179 °C, while turnover frequency (TOF) value was 2479.2 h−1. At same time, onset reaction observed temperature as low 130 °C. The comparison nano-Pd nano-Ru enabled us prove that oxidized surface metals are important high activity...
Privileged structures is a term that used in drug design to indicate fragment popular the population of drugs or candidates are application investigation phases, respectively. motifs because they generate efficient drugs. Similarly, some elements appear be more and catalyst development. To this fact, we use here privileged metal combination. In particular, Ru-based catalysts have paved bumpy road variety commercial applications from ammonia synthesis carbon (di)oxide methanation. Here,...
A method for the comparison of kinetic parameters reaction/process thermogravimetric measurements at isothermal and dynamic conditions processes on a larger scale were considered. It is based concept finite time corresponding total conversion solid phase. The allows determination Arrhenius without selection process mechanism. results obtained (comparison between dehydration thermal decomposition calcite) indicate that values parameter E in both cases are similar, but ln (the entropic factor)...
In previous studies, a kinetic equation based on the Ergun mechanism and concept presented in 1956 was applied to Boudouard–Bell reactions for granular coke (1–3 mm) temperature range T = 1173–1423 K. contrast several other works this subject, proposed only three constants: k 1, rate constant Boudouard reaction; −1, Bell 3, which is related oxy-carbon decomposition CO desorption process. The dependence of these constants allows certain values characteristic aforementioned processes be...
Energy consumption steadily increases and energy production is associated with many environmental risks, e.g., generating the largest share of greenhouse gas emissions. The primary pollution concern CO2, CH4, nitrogen oxides (NOx). Environmental catalysis plays a pivotal role in NOx mitigation (DeNOx). This study investigated, for first time, collection ceramic foams as potential catalyst support selective catalytic reduction (SCR). Ceramic could be an attractive option removal. However, we...
Thermogravimetric analysis of azo-peroxyesters revealed two decomposition stages on TG curves. Molecular nitrogen is released in the first stage and carbon dioxide second. Fitting thermogravimetric data by means three-parameter model a classic one based an Arrhenius-type kinetic equation showed that former approach satisfactorily describes process within wide range extent decomposition. It was found coefficients are related to temperature maximum reaction rate. One also activation energy....
The effect of basic parameters the channels disk pulse devices on heat exchange efficiency was studied both analytically and experimentally, especially in terms acting carrier. A methodology to determine main parameters, namely pressure temperature carrier as well fluid, proposed. mathematical models structural technological device were developed. models’ adequacy proved based a series experimental studies involving with one-stage multistage systems pulsed processing. This enabled...
Energy storing systems can provide leverage to the current supply demand intermittency issue thus increasing energy efficiency. Among many available technologies, thermochemical storage is highly promising. In this work, we investigate, experimentally, for first time, inductive heating as an approach direct coupling of power with thermal technologies. This system also allows versatile measurements in rapid multiple adsorption-desorption cycle control. Adsorption and desorption cycling...