Considered synthetic methods and reactions. Part 165. One-step preparation of hydrazinium nitrates from tertiary amines and azaarenes with hydroxylamine-O-sulfonic acid/barium nitrate/barium oxide and conversion to energetic amine-nitroimides
Heterometallic Metal–Organic Frameworks That Catalyze Two Different Reactions Sequentially
作者:Debraj Saha、Dipak K. Hazra、Tanmoy Maity、Subratanath Koner
DOI:10.1021/acs.inorgchem.6b00292
日期:2016.6.20
copper- and alkaline-earth-metal-based multidimensional metal–organicframeworks, [CuMg(pdc)2(H2O)4]·2H2O}n (1), [CuCa(pdc)2]n (2), [CuSr(pdc)2(H2O)3]n (3), and [CuBa(pdc)2(H2O)5]·H2O}n (4), where H2Pdc = pyridine-2,5-dicarboxylic acid, were hydrothermally synthesized and characterized. Two different metals act as the active center to catalyze two kinds of reactions, viz., olefin to its epoxide followed
disclosed new bimetallic BaMoO4 nanoparticles for the C–Scross-couplingreaction. The C–Scross-couplingreaction of alkyl/aryl thiols with haloarenes was accomplished with high yields. The reaction has good functional group tolerance and selectivity. This is an efficient protocol for synthesizing the building blocks of pharmaceuticals containing C–S bonds. The catalyst is recyclable. The unactivated
Structure and Catalytic Activity of Cr-Doped BaTiO<sub>3</sub> Nanocatalysts Synthesized by Conventional Oxalate and Microwave Assisted Hydrothermal Methods
with an increase in Cr content of all the catalysts. Catalytic reduction of nitrobenzene to aniline studies reveals that BaTiO3 synthesized by microwave is very active and showed 99.3% nitrobenzene conversion with 98.2% aniline yield. The presence of Cr in the catalysts facilitates a faster reduction reaction in all the catalysts, and its effect is particularly notable in conventional synthesized catalysts
在BATI的本研究中合成的1- X的Cr X ø 3个纳米催化剂(X = 0.0≤ X ≤0.05)通过常规的草酸和微波辅助水热合成法进行调查对物理化学合成方法和催化性能的影响纳米催化剂。通过X射线衍射(XRD),傅立叶变换红外光谱(FT-IR),透射电子显微镜(TEM),X射线光电子能谱(XPS),N 2对这些催化剂进行了全面表征。物理吸附,并通过吡啶吸附法获得总酸度。使用水合肼作为氢源,评估了它们的催化性能,以还原硝基苯。利用XRD粉末数据通过Rietveld分析精炼的结构参数表明,BaTi 1– x Cr x O 3常规催化剂在空间群P 4 mm的四方BaTiO 3结构中结晶,而微波催化剂在空间群P 4 mm的纯立方BaTiO 3结构中结晶。下午3米。催化剂的TEM分析揭示了颗粒的球形形态,并且它们均匀地分散在微波催化剂中,而在常规催化剂中观察到颗粒的团聚。与常规催化剂(30-48
Novel Ba(II) and Pb(II) coordination polymers based on citric acid: Synthesis, crystal structure and DFT studies
作者:Aleksandra Drzewiecka-Antonik、Anna E. Koziol、Pawel Rejmak、Krystyna Lawniczak-Jablonska、Laurent Nittler、Tadeusz Lis
DOI:10.1016/j.poly.2017.04.024
日期:2017.8
The crystal structure of both complexes has been determined by X-ray crystallography, thus being the first crystal structure of Ba(II) citrate and only the second one of Pb(II) citrate reported in literature. Both hydrated complexes: [5Ba(C6H5O7)2(C6H6O7)2·6H2O]·2H2O}n and [5.5Pb(C6H5O7)3(C6H6O7)·5H2O]·4.5H2O}n are three-dimensional polymers with four crystallographically distinct citrate groups
Catalysts Conversion Of Hydroxypropionic Acid Or Its Derivatives To Acrylic Acid Or Its Derivatives
申请人:THE PROCTER & GAMBLE COMPANY
公开号:US20130274512A1
公开(公告)日:2013-10-17
Methods for catalytically dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed condensed phosphates.