Search results

Syngas Production via Carbon Dioxide Reforming of Methane in a Wall-Coated Monolith Reactor Thanarak Srisurat1,2,a, Karn Pana-Suppamassadu1,2,b, Phavanee Narataruksa1,2,c, Sabaithip Tungkamani2,3,d, Monrudee Phongaksorn2,3,e, Thana Sornchamni4,f 1Department of Chemical Engineering, King Mongkut’s University of Technology North Bangkok, Bangsue, Bangkok, Thailand 10800 2Research and Development Center for Chemical Engineering Units and Catalyst Design (RCC), King Mongkut’s University of Technology North Bangkok, Bangsue, Bangkok, 10800, Thailand 3Department of Industrial Chemistry, King Mongkut’s University of Technology North Bangkok, Bangsue, Bangkok, Thailand 10800 4Analytical & Petrochemical Research Department, PTT Research and Technology Institute, Wangnoi, Ayutthaya, Thailand 13170 athanarak_1724@hotmail.com, bkaranp@kmutnb.ac.th, cphn@kmutnb.ac.th, dsbtt@kmutnb.ac.th, emps@kmutnb.ac.th, fthana.s@pttplc.com Keywords: Dry Methane Reforming, Wall-Coated Catalyst, Monolith
Furthermore, in scaling up a chemical reactor for the production of syngas via the reforming of methane, there are various types of reactors to be considered, and among those available, a widely adopted type is a monolith reactor in which the reactive gas mixture will be passed through a series of small parallel channels forming a honeycomb-like substrate structure.
Even though the monolith reactor has gained more attentions as a low-pressure-drop, enhanced-heat-and-mass-transfer, heterogeneous, catalytic reactor, the understanding of the interactions among the flow field, the reactor structure and the chemical reaction has been a long-standing research focus.

A structured grid is used for the calculations in this paper.
Also, chemistry of N2O which is observed as a decomposition product of solid AP is involved in through several reactions.
Felt: Two-dimensional Modeling of AP Composite Propellant Flame Structure with Detailed Kinetics.

Conclusions Is implemented in the research of wireless sensor data real-time acquisition, success will be for the first time in domestic hydraulic system, wireless sensor network is applied to the stage to fill the domestic blank of this field, and network hardware platform structures, more successful, solved the wiring cable data collection trival, engineering, and the cost is too high.
This topic research to learn from the various structures of wireless sensor network related knowledge and experience, from the world of wireless temperature sensor temperature humidity monitoring to the automatic meter reading system based on wireless sensor network (WSN), street lamp monitoring management, field data collection system integration, etc., in combination with the practical situation of contact stage hydraulic system, made the corresponding adjustment design, adopted the ZigBee2007 technology of wireless sensor network, mobile terminal data acquisition and processing is implemented, can be realized in different parts of the hydraulic system of the real-time monitoring on the stage.In the study of this topic also encountered more problems, have solved back through his own efforts, also need to perfect place in the study design is not the database entry data management, the data only save became the format of the text, is not conducive to data management research in the future
Journal of Analytical and Bioanalytical Chemistry, 2007, 237.247

As previously it was stated, the composition of gasoline has a large number of hydrocarbons of different structures, which make optimization of the process more complex.
The other research work [2] shows the method, which is based on a structural group contribution approach and requires no experimental procedure of the physical or chemical properties only the chemical structure of the molecule.
Albahri, Structural group contribution method for predicting the octane number of pure hydrocarbon liquids, Industrial and engineering chemistry research. 42 (2003) 657-662

In addition, the gas phase chemistry in these studies has been well investigated by optical emission spectroscopy (OES) method which is widely used in diamond deposition [11-13].
In both Fig.5a and Fig.5b, the peaks around 1140cm-1 and 1447cm-1 indicate the nanostructures in the NCD films, and a weak peak at 1332cm-1 denotes the sp3 carbon which is the most significant feature of diamond structure.
Mikhailov, a-C : H thin films deposited by radio-frequency plasma: influence of gas composition on structure, optical properties and stress levels, Surf.

As a matter of fact, all AHHS are produced by controlling the chemistry and cooling rate from the austenite or austenite plus ferrite field during soaking [1,3].
Nb can act in different manners: (i) it prevents the growth by solute drag effect as explained before in the case of Mn, but its effect is more pronounced, thus, providing very fine hot rolled structure; (ii) it forms a high density of dispersed fine nano scale precipitates, which segregate on the grain boundaries of the nucleated austenite grains and greatly reduce their mobility.
Krauss, Steels: Processing, Structure, And Performance.

The Polymerization process involved in formation of geopolymers, is a relatively quick chemical reaction resulting in a three-dimensional polymeric ring structure comprising of Si-O-Al-O bonds, this alumino-silicate based geopolymer was termed as silicon oxo aluminates or ‘sialates’ for chemical designation [7], [8], [9].
[9] DAVIDOVITS J., “Geopolymer chemistry and applications”, Institute Géopolymére, 3rd edition, Saint-Quentin, France, 2011, 632 pages
V., SUMAJOUW D., Wallah S. and Hardjito D., “Reinforced Low-Calcium Fly ash –based geopolymer Concrete beams and columns”, 31st conference on Our World In Concrete & Structures, Singapore, August 2006

In figure 2a shows the structure of bi-disperse colloidal suspension at the size ratio is 5:1, the small particles form flocculated gel and the large particles move around the gels.
The structure of bi-disperse colloidal suspension at volume fraction 30%, k=350 with size ratio of large to small particles (a) 5:1 and (b) 10:1 The mobility of the particles as the system evolves to form structural network is studied by calculating the mean square displacement.
Shaw, Introduction to colloid and surface chemistry, Butterworth and Heinemann, Oxford, 2013 [21] J.M.

At the end of steelmaking process, the liquid slag can be cooled down rapidly by high pressure air, which could inhibit the growth of the mineral phases, cause distortions of the crystal structures and improve the hydration activity for the steel slag in the end.
By the air quenching, specific surface area for the C2S grains was largely enhanced, as well as defects in crystal structure and distortions for the lattices, which can improve the hydraulic activity for the C2S.
Taylor, Cement chemistry, second ed., Thomas Telford, London, 1997

Stacking of Bi2Te3 and FeSi2 for Thermoelectric Applications Cestmir Drasar1,a and Eckhard Müller2,b 1 University of Pardubice, Faculty of Inorganic Chemistry, 53210 Pardubice, Czech Republic 2 German Aerospace Center DLR, 51170 Cologne, Germany a cestmir.drasar@upce.cz, beckhard.mueller@dlr.de Keywords: Functionally graded thermoelectrics.
Investigations are dedicated to a broad spectrum of problems ranging from fundamental aspects of graded thermoelectrics, selection and technology of suitable materials, modeling and design of graded structures, up to preparation techniques of gradients, joining, and device technology.
A segmented structure (stack) built up by a small number of different materials as seen in Fig. 2 is capable to implement the FGM principle achieving up to 50 to 100% efficiency improvement compared to homogeneous material [7,8].