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纳米Ce_1Mg_xZr_(1-x)O_2固体多相催化剂的制备、表征及催化合成四氢苯并[b]吡喃衍生物的性能(英文)

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催化学报 2010年第6期31卷 631-636页

作者： Sandip RATHOD Balasaheb ARBAD Machhindr. LANDE Department of Chemistry Dr.Babasaheb Ambedkar Marathwada University

A series of Ce1MgxZr1-xO2 mixed metal oxides with different molar ratios were prepared by simple co-precipitation and were characterized by X-ray diffraction,infrared spectroscopy,scanning electron microscopy,energy dispersive spectroscopy,temperature-programmed desorption of CO2,and N2 adsorption *** prepared materials were tested for catalytic activity by the synthesis of tetrahydr.benzo[b]pyran derivatives using a three component reaction(aromatic aldehydes,malononitrile,and dimedone) in an ethanol *** best catalytic activity was obtained with *** particle size or crystallite size was estimated using the Debye-Scherrer *** addition of magnesium oxide into the ceria-zirconia lattice resulted in the formation of nanosized particles ranging from 5.41 to 9.78 *** work describes the catalytic behavior of magnesium oxide in mixed metal oxide systems.

关键词： Ce1MgxZr1-xO2 镁氧化物一起沉淀 nanosized 材料 tetrahydr.benzo [b ] pyran

ZnO-beta zeolite:As an effective and eco-friendly heterogeneous catalyst for the synthesis of benzothiazole derivatives

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Chinese Chemical Letters 2010年第4期21卷 421-425页

作者： Santosh S.Katkar Pravinkumar H.Mohite Lakshman S.Gadekar Kaluram N.Vidhate Machhindr. K.Lande Department of Chemistry Dr.Babasaheb Ambedkar Marathwada UniversityAurangabad 431004MSIndia Chemical Engineering and Process Development Division National Chemical LaboratoryPune 411008MSIndia

A cheap and recyclable ZnO-beta zeolite was used as catalyst for the synthesis of benzothiazole *** method provides several advantages such as environmental friendliness,short reaction times,high yields,simple work-up... 详细信息

关键词： ZnO-beta zeolite Benzothiazole Cyclocondensation Heterogeneous catalyst

Effect of Poly（ethylene glycol）-400 and Carbon on MoOz Nanocomposite Materials and Its Catalytic Activity for Biginelli Reactions

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Chinese Journal of Chemistry 2011年第10期29卷 2049-2056页

作者： Navgire, Madhukar Yelwande, Ajeet Arbad, Balasaheb Lande, Machhindr. Department of Chemistry Dr. Babasaheb Ambedkar Marathwada University Aurangabad 431004 India

The effect of addition of poly（ethylene glycol）-400 （PEG-400） and carbon （0, 1, 2 and 3 wt%） as substrates were investigated systematically to get the desired phase of carbon-doped MoO3 material. The carbon source was prepared from the Acacia arabica plant wood. The resulting samples were calcined at 500 ℃. The effect of PEG-400 and carbon composite on the structure, particle size and morphology were investigated. The prepared samples were characterized by XRD, SEM-EDS and FT-IR techniques. The samples with PEG-400 and carbon ad- dition give better control of particle size and porosity. The prepared catalysts were tested for the synthesis of 3,4-dihydr.pyrimidones via the Biginelli-type condensation reaction. This new method consistently has the advan- tage of excellent yields （88%--93%） and short reaction times （1.5--3 h） than do classical Biginelli reaction conditions.

关键词： carbon substrate MOO3 PEG Biginelli reaction 3,4-dihydr.pyrimidones

ZrOCl_2·8H_2O catalyzed solvent-free synthesis of isobenzofuran-1(3H)-ones

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Chinese Chemical Letters 2011年第2期22卷 163-166页

作者： Jaiprakash N.Sangshetti Siddique Akber M.K.Ansari Devanand B.Shinde Department of Chemical Technology Dr.Babasaheb Ambedkar Marathwada UniversityAurangabad 431004(MS)India

ZrOCl2·8H2O catalyzed environmentally benign synthesis of isobenzofuran-1（3H）-ones are ***2·8H2O appeared to be an excellent catalyst for the condensation and *** of phthalaldehydic acid（2-carboxybenzaldehyde） with methylaryl and cyclic ketones was initiated by condensation and occurred in one step providing excellent yields（90-98%）.

关键词： 2-Carboxybenzaldehyde Methylaryl and cyclic ketones ZrOCl_2·8H_2O catalyst