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Co/ZrO2-Al2O3 catalysts with bimodal pore distribution for Fischer-Tropsch synthesis Shanghong Zeng, Ning Ding, Tianjia Chen, Shiyong Yu, Fenghua Bai, Haiquan Su* Inner Mongolia Key Laboratory of Coal Chemistry, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China Shanghongzeng001@163.com, chentianjiaiwj@163.com, syychem@yahoo.com, fenghua68@126.com, haiquansu@yahoo.com Keywords: composite oxide support; cobalt-based catalyst; bimodal pore distribution; Fisher-Tropsch synthesis Abstract: The Co/ZrO2-Al2O3 catalysts were prepared by impregnation method, and characterized via quantitative XRD, H2-TPR, and N2 adsorption-desorption techniques.
Al2O3 is an attractive catalyst support due to large surface area and high melting point, but it is easy to react with cobalt to produce cobalt-aluminum spinel structure which is difficult to reduce, resulting in lower catalyst activity.
For Co3O4, the 2θ values of reflections appeared at 19.03o, 31.28o, 36.85o, 45.05o, 59.36o and 65.21o, respectively corresponding to (111), (220), (311), (400), (511) and (440) planes of the spinel structure.

Water Footprint Assessment provides a structured approach for companies to develop corporate water strategies.
The reasonable assessment provides a clear, useful, and structured way for a company or facility to initiate and strengthen water sustainability action plans.
Environmental Toxicology and Chemistry, 1999,Vol 18(10), p 2386–2391
Society of Environmental Toxicology and Chemistry (SETAC) Conference 14–17 March 1999 Edinburgh, UK.

Different shapes and sizes of the defects are introduced in the perfect structure to analyze their behaviour with the variation of strain.
Raymont, Evaluation of lightweight AlSi10Mg periodic cellular lattice structures fabricated via direct metal laser sintering, Journal of Materials Processing Technology, 214 (2014), 856-864
Sahoo, Sintering of AlSi10Mg particles in direct metal laser sintering process: A molecular dynamics simulation study, Materials Chemistry and Physics, 236 (2019), 121803
Russian Journal of Physical Chemistry A, 91(2017), 2448-2452

Fig. 3 shows a relationship between chemistry of welds and precipitates contents.
The selected residues from electrolytic extractions were analyzed by X-ray diffraction to determine the structure of the precipitates.
The extracted ppts from six type 347 welds had same crystal structure matched with Nb(C, N) presented in Fig. 4.
It assumed that the variations of strength were attributed to the difference of ppt contents in type 347 welds which was originated from the difference of the chemistries of welding rods.

Compared to plasa spraying, the advantages of MAO-HT include good control of the composition and structure of coatings, relatively low processing temperatures, which enables the formation of highly crystalline deposits with low residual stresses, and the ability to deposit on non-line-of-site.
Preparation of calcium phosphate coatings on titanium implant materials by simple chemistry.
Elliot, Structure, chemistry of apatites and other calcium orthophosphates.

The compressive forces are released because of the water entering the panel structure, promoting the greatest swelling in thickness and water absorption [12].
Material and Methods The research work was carried out Laboratory of Wood Technology and Organic Chemistry of Federal University of Piauí, in Bom Jesus-PI (UFPI/CPCE).
The sticker used were the urea formaldehyde ones, produced in the Organic Chemistry lab at CPCE/UFPI, at the molar ratio of (1:2), at the proportion of 6 %, according to literature [23].
Structure, Properties, Utilization.

Ge Xiong1, Huimin Sun1, Xue Yang1, Jinshi Li1, Meihua Chen1, Jieguang Song1a, Lin Chen2, Aixia Chen3b, Chao Yang3 1Engineering & Technology Research Center for Environmental Protection Materials and Equipment of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China 2Key laboratory for Industrial Ceramics of Jiangxi Province, School of Materials and Chemistry Engineering, Pingxiang University, Pingxiang 337055 China 3School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China asongjieguang@163.com, b93618054@qq.com Keywords: Cobalt oxide; ultra-fine powder materials; synthetic technology; hydrothermal method Abstract.
Bootjomchai, Glass structure responses to gamma irradiation using infrared absorption spectroscopy and ultrasonic techniques: A comparative study between Co2O3 and Fe2O3, Appl.
Liu, Structure and asymmetric ferroelectric loops of (K0.48Na0.52)NbO3-1mol%CuO-xmol%Co2O3 ceramics with low-temperature sintering, J.

The FetO activity calculating model of alkali-containing BF slag was built according to the coexistence theory of slag structure at 1773K.
The coexistence theory of slag structure is well used in steel-making slag, molten metal and molten salt, and it was also in line with real consequences [16-19].
Establishment of the Component Activity Model Based on the research results of coexistence theory of slag structure[20-24], combined with slag system phase diagram, and used thermodynamics software(HSC Chemistry 5), the Gibbs free energy of compounds probably existed in slag were calculated, and the structure unit of the CaO-SiO2-Al2O3-MgO-TiO2-K2O-FeO-Fe2O3 slag were obtained at the condition that their Gibbs free energy were all less than zero.
It is proved that the model could reflect the structure features of the low iron-oxide content slag.
The calculating results are consistent with the former references [3-6], it is proved that the model reflects the structure features of the slag.

However, CDA and BCP obtained using NaOH present Na + in their structure.
It must be taken into account that the apatite structure admits numerous ionic substitutions into the crystalline structure.
Our research group has developed CaP based scaffolds with hierarchical pore structure, throught the introduction of porogens [72].
Although α-TCP and β-TCP have the same chemical composition, they differ by the crystal structure and solubility.
Elliot, in: Structure and chemistry of the apatites and other calcium orthophosphates, Studies in inorganic chemistry, Elsevier (1994)

Only recently the well-resolved hyperfine structure of the P6/P7 EPR center has been experimentally observed.
This reassignment of the P6/P7 centers was based on the observation of a weak hyperfine (HF) structure assigned to the interaction with one 13C nucleus (I=1/2, 1.1% natural abundance).
In recent EPR studies by Son and co-workers on P6/P7 centers, however, this HF structure was shown to be due to the HF interaction with three 13C ligands instead of one in 6H and 4H-SiC [5].
First the atomic structure was obtained using the pseudopotential method as outlined in Refs. [6] and [7] and then the HF tensors were calculated by the all electron PAW method [8].
Neutral divacancy: electronic structure and its hyperfine signature In VC-VSi the three C-dangling bonds and three Si-dangling bonds create six defect levels.