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One pillared Layered Zn(Ⅱ) Coordination Compound Based on 2,6-Naphthalenedicarboxylic Acid: Synthesis, Structure and Luminescent Property

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Chinese Journal of Structural Chemistry 2019年第5期38卷 761-768,669页

作者： LI Ya-Min WU Ying-Ying LI Hai-Yan ZHAO Xiao-Wei JIN Lin-Yu DANG Dong-Bin Henan Key Laboratory of Polyoxometalate Institute of Molecular and Crystal Engineering College of Chemistry and Chemical EngineeringHenan University

One new pillared layered zinc hydroxide {Zn4（OH）6（ndc）·2（H2 O）}n,（H2 ndc =2,6-na-phthalenedicarboxylic acid） has been achieved under hydrothermal conditions by using2,6-na-phthalenedicarboxylic acid, 2,4-diami-6-phenyl-1,3,5-triazine as well as Zn（OAc）2·2 H2 O,and structurally characterized by X-ray single-crystal diffraction, IR spectra, elemental analysis,powder X-ray diffraction（PXRD） and thermogravimetric analysis（TGA）. The X-ray single-crystal diffraction proves that the title compound is in monoclinic system, space group P21/c with a =16.362（8）, b = 9.324（5）, c = 5.364（3） ?, β = 99.081（9）°, V = 808.1（7） ?3, Dc = 2.522 g/cm3, Mr =613.73, Z = 2, F（000） = 608, μ = 5.935 mm-1, GOOF = 1.050, R = 0.0469 and wR（Ⅰ > 2σ（Ⅰ）） =0.1291. In the title compound, the tetrahedral and octahedral zinc atoms are connected by μ3-OH groups to form zinc hydroxide inorganic layers extending parallel to the bc-plane. The adjacent layers are pillared by the connection of Zn2 atoms with ndc2-ligands to construct a three-dimensional（3D） structure; meanwhile, the interactions of five hydrogen bonds make the 3D network structure more stable. Furthermore, the title compound exhibits luminescent property at solid state.

关键词： pillared layer zinc hydroxide naphthalenedicarboxylic acid luminescent property

Preparation and characterization of carbon pillared clay material

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Science China(Technological Sciences) 2009年第1期52卷 210-214页

作者： ZHANG ZengZhi YANG ChunWei NIU JunJie Institute of Ecological and Functional Materials China University of Mining and TechnologyBeijing 100083China

Carbon pillared clay material was prepared from montmorillonite modified by C19H42BrN and C10H16ClN. SEM, FT-IR, XRD, N2 adsorption-desorption, thermal-gravimetric analysis and differential scanning calorimetry were employed to characterize the pore structure and test the effect of surfactant. The results show that organic modifier combines with montmorillonite particles by covalent bond and ion embedded. The microstructure of carbon pillared material looks like needle slice. The most probable pore size distribution is about 1.7 nm. The clay material slice mainly consists of two-dimensional aperture supported by a carbonization pillar. The high-temperature stability of carbon pillared clay is im- proved.

关键词： carbon pillared modified montmorillonite two-dimensional aperture surfactant

Photodegradation of dye pollutants on TiO_2 pillared bentonites under UV light irradiation

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Science China Chemistry 2002年第4期45卷 445-448页

作者：李静谊朱怀勇丁哲陈春城赵进才 Centre for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing China Nanomaterials Centre and Department of Chemical Engineering University of Queensland Australia

TiO2 pillared bentonite samples dried under different conditions are used to degrade 2,4-dichlorophenol and orange II under UV light irradiation. The supercritical dried sample exhibits a high activity for the photodegradation of 2,4-dichlorophenol and orange II due to its structural features. TOC and COD are measured during the degradation of 2,4-dichlorophenol under UV light irradiation using P25 and TiO2 pillared bentonite samples dried under different conditions. The clay-based catalysts can be readily separated by filtration or sedimentation.

关键词： TiO2 pillared clays 2 4-dichlorophenol orange II UV light irradiation.

Influence of Drying and Calcination on Remaining Amount and Immobile Character of Titanium on Titanium-pillared Montmorillonite

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Chinese Journal of Chemistry 2012年第5期30卷 1017-1021页

作者：赵川王小群杜善义 School of Material Science and Engineering Beihang UniversityBeijing 100191China

Remove of titanium （Ti） from titanium-pillared montmorillont （TIPM） is not expected during its application as adsorbent and photocatalyst, etc. But studies on immobilization of Ti on TIPM are seldom reported. In this work, TIPM was synthesized from TIC14 and Na＋-montmorillont （Na＋-MMT）. Then the prepared TIPM was heated at different temperatures （100, 240 and 450 ~C） to yield three TIPM samples （TIPM1, TIPM2, and TIPM3）. Inductively coupled plasma optical emission spectrometer （ICP-OES） was used to determine the effect of heating temperature on the remaining amount of Ti on TIPMs. A two-step treatment method which is often used in the pretreatment and application of TIPM was developed to investigate the immobile character of Ti on TIPMs. X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FT-IR）, N2 adsorption/desorption isotherm, thermogra- vimetric analysis and differential scanning calorimetry （TG-DSC） were also used to characterize TIPMs before and after the treatment. The results show that with an increase in heating temperature, the amount of Ti species re- mained on T1PM decreases gradually and Ti immobilization is strengthened on TIPM. For TIPM3, less than 2% Ti is removed from TIPM3 after the treatment required to simulate the practical conditions of TIPM in its application, while those of TIPM1 and TIPM2 are 6.6% and 8.4%, respectively. The reason may be that when TIPM is heated, Ti species intercalated into MMT become chemically bonded with the framework of MMT and partially migrate into the layer structure, which make Ti immobile on TIPM firmly during the treatment process.

关键词： titanium pillared montmorillonite immobilization calcination

Synthesis, characterization and oxidative activity of heteropolyanion pillared layered compound

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Chinese Science Bulletin 1997年第11期42卷 914-918页

作者： He, QL Gao, J Hu, CW Wang, EB NE NORMAL UNIV DEPT CHEMCHANGCHUN 130024PEOPLES R CHINA

TRANSITION element trisubstituted and Ln bi-（1:11）series heteropolyanion with Keggin struc-ture are excellent catalyst with oxidizing *** they have some shortcomingssuch as poor stability and impossible recycle use when they are used in homogeneous ***（An-）,among hydroxides（LDHS）-like layers,having a general formula[M1-x2+Mx3+-

关键词： heteropolyanion pillared layered compound synthesis oxidative activity.

Syntheses, characterization and catalytic reactivities of heteropolyanion-pillared clay of anions of Zn-Al type

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Science China Chemistry 1996年第1期39卷 86-94页

作者：刘彦勇胡长文王作屏张继余王恩波 Department of Chemistry Northeast Normal University Changchun 130024 China

Mono-substituted Keggin ions PW11O39Cr(H2O)4 , PW11TiO403 and PW11VO404 were intercalated between the layers of the clay of anions of Zn-Al type using the ion exchange method to obtain a new type of pillared layered microporous materials ZnAl-PW11Cr, ZnAl-PW11Ti and ZnAl-PW11V with basal spacing (1.48±0.02) run. On the basis of the MAS NMR results of 27A1 and 31P, a steric pillared layered structure model of orientation localization of PW11VO40,4- in the orientation in which the C2 axis of PW11VO404-is perpendicular to the host layer. It has been found that this kind of pillared layered microporous materials possess a higher catalytic activity for the esterification of acetic acid with n-butanol than H-type molecular sieves.

关键词： beteropolyanions pillared layered clay synthesis esterification activity.

Sorption of wastewater containing reactive red X-3B on inorgano-organo pillared bentonite

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第4期7卷 314-319页

作者： ZENG Xiu-qiong Department of Chemistry Zhejiang University Hangzhou 310028 China

Bentonite is a kind of natural clay with good exchanging ability. By exchanging its interlamellar cations with various soluble cations, such as quaternary ammonium cations and inorganic metal ions, the properties of natural bentonite can be greatly improved. In this study, hexadecyltrimethylammonium bromide (HDTMA), CaCl2, MgCl2, FeCl3, AlCl3 were used as organic and inorganic pillared materials respectively to produce several kinds of Ca-, Mg-, Fe-, Al-organo pillared bentonites. Sorption of reactive red X-3B on them was studied to determine their potential application as sorbents in wastewater treatment. The results showed that these pillared bentonites had much improved sorption properties, and that the dye solutions’ pH value had some effect on the performance of these inorgano-organo pillared bentonites. Isotherms of reactive X-3B on these pillared bentonites sug-gested a Langmuir-type sorption mechanism.

关键词： Reactive red X-3B Sorption pillared Bentonite

Effects of Layer Change and Chemical Composition on Thermal Stability and Catalytic Activity of pillared Montmorillonite

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石油学报（石油加工） 1997年第S1期13卷 97-101页

作者： Liao Huisheng , He Mingyuan (Research Institute of Petroleum Processing, Beijing 100083)

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关键词： pillared montmorillonite layer structure cation exchange capacity thermal stability catalytic property hydrocracking reaction

Characterization and Adsorption Study of Thymol on pillared Bentonite

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Open Journal of Physical Chemistry 2014年第3期4卷 98-116页

作者： Mohamed El Miz Samira Salhi Ikrame Chraibi Ali El Bachiri Marie-Laure Fauconnier Abdesselam Tahani Département de Géologie Faculté des Sciences Université Mohamed 1er Oujda Morocco LACPRENE Faculté des Sciences Université Mohamed 1er Oujda Morocco Unité de Chimie Générale et Organique Gembloux Agro-Bio Tech Université de Liège Gembloux Belgique

pillared clay (PILC) was prepared from Moroccan clay and characterized, and its aqueous thymol adsorption capacities were studied using a batch equilibrium technique. So, we tested the encapsulation of thymol by aluminum pillared clay (PILC). The PILCs displayed a total surface area of 270 m2/g, a total pore volume of 0.246 cm3/g and an average pore diameter of 8.9 A, which corresponds to the size of Al13 forming the pillars between the clay layers. The adsorption capacity shown by the PILCs for thymol from water is close to 319 mg?g-1 for low solid/liquid ratio (0.2%). This result suggests that the PILCs have both hydrophobic and hydrophilic characteristics, as a result of the presence of silanol and siloxane groups formed during the pillaring and calcination of the PILCs. The experimental data were analyzed by the Freundlich and the Langmuir isotherm types for low values of equilibrium concentration. The rise of the isotherm in this range of concentrations was related to the affinity of thymol for clay sites, and the equilibrium data fitted well with the Freundlich model with maximum adsorption capacity of 319.51 mg/g for a ratio RS/L = 0.2%. Pseudo-first and pseudo-second-order kinetic models were tested with the experimental data and pseudo-first order kinetics was the best for the adsorption of thymol with coefficients of correlation R2 ≥0.986, and the adsorption was rapid with 90% of the thymol adsorbed within the first 20 min.

关键词： Clays Bentonite Thymol Adsorption Desorption Kinetics pillared Clay