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Naeem3 1Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS 2Department of Chemical Engineering,Universiti Teknologi PETRONAS 3NCE in Physical Chemistry, University of Peshawar *e-mail address: maizats@petronas.com.my Keywords: Carbon nanofibers, copper loading, deposition precipitation, copper zirconia catalyst Abstract- Carbon nanofibers based Cu-ZrO2 catalysts (Cu-ZrO2/CNF) were synthesized by deposition precipitation method.
Characterization Structure as well as degree of crystallization of the catalyst were investigated by X-ray diffraction technique (XRD).
Table 1: Textural properties of CZC catalyst Catalyst BET Surface Area (m²/g) Adsorption Pore volume (cm³/g) Adsorption average pore width (nm) 10CZC 59 0.13 9.1 15CZC 29 0.08 11.5 20CZC 31 0.07 9.6 Catalytic hydrogenation reactions were formerly considered as structure insensitive.
Xia,Cu/SiO2 catalysts prepared by hom- and heterogeneous deposition–precipitation methods: Texture, structure, and catalytic performance in the hydrogenolysis of glycerol to 1,2-propanediol, Catalysis Today.183 (2012) 42-51 [9] I.
The Influence of the Nanofiber Structure, The Journal of Physical Chemistry B.102 (1998) 5168-5177 [14] A.

Introduction The rare earth doped tellurite glasses are widely investigated due to their unique electronic structure properties highly suitable for potential applications in optical sensing, telecommunications and biochemical studies [1-3].
The increase of molar volume is due to the change in glass networks as Nd3+ incorporated into the glass structure.
Nie, Physical Properties and Optical Band Gap of New Tellurite Glasses Within the TeO2 – Nb2O5 – Bi2O3System, Materials Chemistry& Physics 113 (2009) 407 – 411
Samavati, Effect of AgCl on Spectroscopic Properties of Erbium doped Zinc Tellurite Glass, Journal of Molecular Structure 1035 (2013) 6 – 12
Ahmed, New Tellurite Glass: Optical Properties, Materials Chemistry and Physics 109 (2008) 291 – 296

Well-defined LaBO3:Tb3+ Hierarchical Architectures: Facile Synthesis and Luminescence Properties Guang JIA1a, Jing-Yi LIU1b, Dong-Bing DONG1, Cui-Miao ZHANG1d 1Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China a guangjia2001@163.com, b1041828618@qq.com, c627159630@qq.com, dcmzhanghbu@163.com Keywords: Synthesis, LaBO3:Tb3+, Hierarchical architectures, Luminescence.
From the perspective of application, the nano- or micromaterials with specific morphologies are not only synthesized in large quantities with a desired composition and structure but also are prepared and assembled using green, environmentally responsible methodologies.
The structure, morphology, and luminescence properties of the as-obtained LaBO3:Tb3+ sample were investigated in detail.
The product looks like straw-sheaf or microflowers with fantails consisting of a bundle of outspread nanorods, which are closely bonded to each other in the middle of hierarchical structures.
The crystal structure, morphology, and luminescence properties were characterized by XRD, SEM, PL, and CL, respectively.

The alloy is characterized by a solid-solution hardening mechanism, which provides high technological plasticity, a high level of heat resistance, good weldability, stability of the structure and properties at long-term high-temperature operation [1, 2].
The selected regime of heat treatment is characterized by a combination of high pulse power density of the exposure (108 – 109 W/cm2) and light average power (less than 1 W), which ensured a high-gradient temperature regime on the surface of the material at almost room temperature in the bulk of the sample and excluded thermal macro-changes in its structure.
Teplitskiy, Change in the structure of a Cu-Cr alloy irradiated by a CO2 laser pulse, Physics and Chemistry of Materials Treatment (Fizika i Khimiya Obrabotki materialov).
Yamshchikov, The effect of irradiation with nanosecond laser pulses on the surface structure of metal alloys, Physics and Chemistry of Materials Treatment (Fizika i Khimiya Obrabotki materialov).

Microdescription of the surface structure or at least of a line on the surface requires involvement of a new mathematical apparatus – the fractal theory.
Calculate the increase in the path length on the inner surface of the capillary caused by a complex structure of this surface.
The surface structure can contribute to the solution of this problem.
Chemistry 46 (2005) 378–381
Geil, Polymer single crystals, Chemistry, Lеningrad., 1968

To solve the problem of quantitative analysis of compounds based on spectral data, chemometric algorithms are used [17-18], including the method of projection on latent structures [19].
The purpose of research – usage of chemometric algorithms: a method of projection on latent structures of the PLS to create a multidimensional calibration model for predicting the values of properties that characterize the pozzolanic activity of metakaolin, based on UV-VIS-NIR spectroscopy.
Conclusion The results of applying the multidimensional regression method are presented: projections on latent structures using UV-VIS-NIR spectra to create calibration models for determining the mass loss during calcination and the total acid solubility of metacaoline as indicators indirectly characterizing its pozzolanic activity.
Trends in Analytical Chemistry. 3(8) (1984) 204-210
Analytical Chemistry. 72 (2017) 147-155

Preparation of YVO4:Eu3+ red phosphor by combustion synthesis and its luminescence properties Zhen-hua Liang1, Feng-qi Lu1, Xiao-Xia Liu2 and Gui-hua Peng1,a 1Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, China 2College of Arts & Science, Jianghan University, Wuhan 430056, China apengguihua@mail.sic.ac.cn Keywords: Yttrium orthovanadate; Red phosphor; Combustion synthesis Abstract.
Introduction Yttrium orthovanadate (YVO4) fluorescent material has a tetragonal type oxide structure and possesses many excellent characteristics including good thermal, mechanical, and optical properties, which make it play an important role in almost any device involving the artificial production of light and display fields, such as excellent polarizer and laser host material [1,2].
All the diffraction peaks could be assigned to the tetragonal zircon-type of YVO4:Eu3+ (JCPDS 76-1649), and no impurity phases were detected, which indicates that the reactants can be ignited at various temperatures from 700 oC to 900 oC and form crystalline YVO4:Eu3+ with tetragonal structure.
It is noticed that although the samples are composed of single phase YVO4:Eu3+ with tetragonal structure, the emission intensity of samples synthesized at the same condition, except reaction temperature, decreased with the increase of ignition temperature (Fig. 3).
On one hand, the amounts of the voluminous gases evolving during the combustion increases as the molar ratio of urea to yttrium increases, which will result in products with porous structure and small sizes.

As the volume ratio of DMF-H2O was 3:7, CaCO3 particles formed bouquet-like structures composed of submicron-sized columnar aggregates.
As the volume ratio of DMF-H2O was 8:2, disk-like CaCO3 particles with loose surface structures were obtained.
Journal of Physical Chemistry B, 2006 110 6432-6436
Crystallization of calcium carbonate mineral with hierarchical structures in DMF solution under control of poly(ethylene glycol)-b-poly(L-glutamic acid): effects of crystallization temperature and polymer concentration.
Journal of Physical Chemistry B, 2009 113 4218-4225.

Filtered, dried and triturated the silica scale, coated the powder on the conductive tape, observed silicon scale’s structure with a SEM, as shown in Fig2-1, 2-2.
Powder on the conductive tape is coated, and silicon scale’s structure with a SEM is observed, as shown in Fig.2-3 and 2-4.
(3) The system contains the polyvalent metal ion, polyacrylamide and surface active agent; mixed scale by silicon crystal silicon scale, strip scale and scattered irregular flake, patches, spherical scale composition, the structure is very complex.
Oilfield Chemistry,1996,13(3):248-252.
Oilfield Chemistry, 2006,23(4):362-368.

Fig.4 Original specimen Fig.5 80℃,9d aged Fig.6 80℃,29d aged Swelling lead to the volume of the rubber become larger, its crosslinked network lattice structure to be stretched, is equivalent to apply prestress to the mesh chain structure, the rubber becomes soft, that is why there is decrease in hardness.
Compression set is the superposition of rubber specimen creep and swelling and chemistry (crosslinking and degradation) reactions.
Changes of internal micro-structure of the tread rubber material due to swelling and extraction (Fig.4-Fig.6) will lead to the rubber material properties change.
Conclusions Based on the material of the tire tread rubber oil resistance test, that the rubber material has occurred swelling phenomenon, the internal microscopic structure and Mechanical properties are changed, all the basic physical properties of the rubber material has declined, resulting in deterioration of the durability of the tire, wear resistance, maneuverability, rolling resistance and other performance.
Radiation Physics and Chemistry 75 (2006) 432–442