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The porosity, framework structure and surface area parameters were evaluated by TriStar II 3020 Micromeritics (USA) analyzer.
Composite structures and degree of their modification by implemented metal ions was studied using scanning electron microscopy.
The Use of the Peats from Tomsk Region when Purifying Wastewaters from Heavy Metals and Oil Products// Chemistry for Sustainable Development. 1997.
Evaluating the Sorption Capacity of Moss Peat//Water: Chemistry and Ecology. 2013.
Catalytic Oxidation of Methylene Blue with Atmospheric Oxygen in the presence of Iron Turnings and Hydrogen Peroxide//Ecological Chemistry. 2012.

It is found that the formation of perovskite structure is directly related to the content of Mn and calcining temperature.
According to Goldschmidt's law of crystal chemistry, the left-hand side of (2) is called tolerance factor.
The calculated result indicates that SFMN is supposed to have a very stable double-perovskite structure.
The double-perovskite structure of SFMN is stable under both oxidizing and reducing atmosphere.
Base of inorganic materials science (Physical chemistry for silicate), Wuhan Institute of Technology Press, Wuhan, 1996.

., On Tetrafluorobromates(III): Crystal Structures of the Dibromate CsBr2F7 and the Monobromate CsBrF4, Zeitschrift fur anorganische und allgemeine Chemie. 639 (2013) 2846-2850
Chemistry of the Inter-halogen Compounds.
[8] Rosen S., General Method for the Preparation of b,b-Difluoroacrylates Using BrF3, Journal of Organic Chemistry. 69 (2004) 8786–8788
[9] Suhoverhov V.F., Chemistry of Flourohalogenates, Nauka, Moscow, 1968
[11] Rozen S., Selective Reactions of Bromine Trifluoride in Organic Chemistry, Advanced Synthesis & Catalysis. 352 (2010) 2691–2707

Through absorbing on the surface of cement particles, the filtrate reducer could control fluid loss by means of improving the structure of the mud cake, reducing the permeability of the mud cake and enhancing liquid viscosity [1].
Oilfield Chemistry,2007,24(3):277-282
LI, Hydrolysis of AM/AA/AMPS Copolymer at High Temperature [J].Chinese Journal of Applied Chemistry, 2000,17(2):117-120
SPE International Symposium on Oilfield Chemistry, 20-22 April 2009.
Oilfield Chemistry, 1995,12(3):271-272.

Both rat and bovine type I collagen had two α bands with molecular structure of [α1(I)]2α2(I) and with a molecular weight of 379 and 392 kDa, respectively.
Niecikowska: Food Chemistry, Vol. 66 (1999), P 153
Weil: Food Chemistry, Vol. 84 (2004), p. 551
Food Chemistry, Vol. 76 (2002), p. 149
Lillian: Food Chemistry, Vol. 100 (2007), p. 1511.

External wooden structures have own place in the building industry for ages.
The lignin is the key structure in wood degradation by UV radiation.
The TiO2 itself was provided by Institute of Inorganic Chemistry AS CR, v.v.i.
In the case of acrylic solution, the organic porous structure is created.
Handbook of wood chemistry and wood composites 7 (2005) 139-185.

The structure was solved by direct methods and refined using full-matrix least squares on F2 with SHELXTL-97 crystallographic software.
A summary of the crystallographic data and structure refinements for 1 is given in Table 1.
Results and Discussion 3.1 Crystal structure of 1.
Lehn: Supramolecular Chemistry (VCH Publications, New York1995)
Vögtle: Supramolecular Chemistry (Wiley Chicester Publications, New York1991)

FTIR was employed to characterize the structure of PAA and hydrogels.
The structure of PAA and hydrogel in Fig 2 were confirmed by FTIR.
With rdeg increasing, the degraded hydrogel showed more losse porous structure.
Mattiasson: Macromolecular Chemistry and Physics Vol. 209 (2008), p. 577 [11] S.
Zhang, et al: Journal of Polymer Science Part A: Polymer Chemistry Vol. 47 (2009), p. 4074 [12] Y.

The overall porosity of the 3D structures is contributed by the presence of both pores-by-process (PBP) and pores-by-design (PBD).
This disables the measurement of the actual porosity as the mercury cannot penetrate into the entire structure.
Kashiwagi, Thermal decomposition chemistry of poly (vinyl alcohol), Fire and Polymers II: Materials and Test for Hazard Prevention ACS
Choong, Endothelial cell thrombogenicity is reduced by ATRP-mediated grafting of gelatin onto PCL surfaces, Journal of Materials Chemistry B. 5 (2014) 485-493
Leroy, The relative influence of the topography and chemistry of TiAl6V4 surfaces on osteoblastic cell behaviour, Biomaterials. 15 (2000) 1567-1577

The Ce and Fe doping amount almost has no effect on the TiO2 crystal structure Fig.1 X-ray diffraction patterns and scanning electron micrograph of as-prepared samples The SEM graph (Fig. 1B) shows the morphology of the as-prepared samples is porous spherical structure composed of many particles.
They form a spherical porous structure which aggregate by many small particles.
Porous structure can be increased the specific surface area in photocatalyst.
The samples of 0.2% Ce and 0.5% Fe doped TiO2 sintered at 500oC for 2 h, XRD patterns show that the crystal is anatase and SEM pictures show the morphology is small grain of porous spherical structure.
The enhanced photo-catalytic behavior of Sb2O3/TiO2 semiconductor nanopowder．Chinese J. of Inorganic Chemistry, 17(1)(2001)37-41 [3] N Bao, J Sun, F Zhang    Z H Ma, F Liu．N-doped TiO2: Preparation by hydrothermal reaction-thermolysis process and photocatalytic activity．Chinese J. of Inorganic Chemistry, 12(1)(2007)101-108 [4] Y Wang, L Wang, J Yuan, P Peng, T Lu．Influence of Mo doping on structure and activity of nanosized TiO2.