نتایج جستجو برای: pxrd

تعداد نتایج: 684  

Journal: :Chemistry methods 2022

The novel spinel Cu0.2Co0.2Mn0.2Ni0.2Zn0.2Fe2O4 comprising six transition metal cations was successfully prepared by a solution-combustion method followed distinct thermal treatments. entropic stabilization of this hexa-metallic material is demonstrated using in situ high temperature powder X-ray diffraction (PXRD) and directed removal some the constituting elements. Thorough evaluation PXRD da...

2017
Joana M Pais Maria João Barroca Maria Paula M Marques Filipe A Almeida Paz Susana S Braga

Fisetin is a natural antioxidant with a wide range of nutraceutical properties, including antidiabetic, neuroprotecting, and suppression or prevention of tumors. The present work describes the preparation of a water-soluble, solid inclusion compound of fisetin with gamma-cyclodextrin (γ-CD), a cyclic oligosaccharide approved for human consumption. A detailed physicochemical analysis of the prod...

2017
Tanmay Banerjee Frederik Haase Gökcen Savasci Kerstin Gottschling Christian Ochsenfeld Bettina V Lotsch

We demonstrate photocatalytic hydrogen evolution using COF photosensitizers with molecular proton reduction catalysts for the first time. With azine-linked N2-COF photosensitizer, chloro(pyridine)cobaloxime co-catalyst, and TEOA donor, H2 evolution rate of 782 μmol h-1 g-1 and TON of 54.4 has been obtained in a water/acetonitrile mixture. PXRD, solid-state spectroscopy, EM analysis, and quantum...

2017
Barbara A. Reisner Ashley N. Peralta Krishnan Prabhakaran

2 3 3 3 2 Na[BH(C H N ) ]·solvent (solvent = H O, DMF, IPA) crystallize as a porous framework with the distorted primitive cubic (pcu) topology. Solvent molecules occupy the framework pores. The solvent of crystallization can be removed by heating. Isothermal thermogravimetric analysis shows that solvent loss is consistent with a 1-D diffusion mechanism. Variable temperature powder X-ray diffra...

Journal: :Journal of Pharmacy and Science 2023

Ketoprofen is a non-steroidal anti-inflammatory compound (NSAID) which has low solubility in water. The aim of this study was to increase the dissolution rate ketoprofen by forming multicomponent ketoprofen-Proline with ratio 1:1, 1:2, and 2:1 using solid state grinding method. Samples were characterized Powder X-Ray Diffractometry (PXRD), Differential Scanning Calorimetry (DSC), Fourier Transf...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2008
T Balakrishnan G Bhagavannarayana K Ramamurthi

Nonlinear optical single crystals of ammonium pentaborate (APB) were grown by the slow cooling method from aqueous solution. Grown crystal was characterized by powder X-ray diffraction (PXRD) and FT-IR spectral analysis. Perfection of the grown crystal was evaluated by high-resolution X-ray diffractometry (HRXRD). The effect of nylon threading on the perfection of the grown bigger crystal was a...

2015
Huong Giang T. Nguyen Lily Mao Aaron W. Peters Cornelius O. Audu Zachary J. Brown Omar K. Farha Joseph T. Hupp SonBinh T. Nguyen

4444 | Catal. Sci. Technol., 2015, 5, 4444–4451 This journal is © The R Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. E-mail: [email protected] Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 22254, Saudi Arabia † Electronic supplementary information (...

2017
Hao Zhang Ying Zhu Ning Qiao Yang Chen Linghuan Gao

In this study, we attempted to prepare carbamazepine (CBZ) cocrystal through the solution method in ethanol-water solvent mixture (volume ratio 1:1) and polyvinyl pyrrolidone (PVP) solution. Nicotinamide (NIC) and saccharin (SAC) were selected as cocrystal coformers. Cocrystal screening products were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorime...

2016
Ggoch Ddeul Han Sarah S. Park Yun Liu David Zhitomirsky Eugene Cho Mircea Dincă Jeffrey C. Grossman

Department of Materials Science and E Technology, 77 Massachusetts Avenue, Cam mit.edu Department of Chemistry, Massachusetts I Avenue, Cambridge, MA, 02139, USA † Electronic supplementary information ( compounds 1–8 and polydiacetylenes, a d compounds 5–8, packing structures of polymer 3, thermochromism of polym compounds 1–8 during charging or compound 1, kinetic studies on therm compounds 3–...

Journal: :Chemical communications 2015
Yifeng Yun Manuel Hernández Wei Wan Xiaodong Zou Jose L Jordá Angel Cantín Fernando Rey Avelino Corma

A new germanosilicate zeolite (denoted as ITQ-53) with extra-large pores has been synthesised using tri-tertbutylmethylphosphonium cation as the organic structure directing agent (OSDA). Rotation electron diffraction (RED) was used to identify ITQ-53 from an initially-synthesised sample containing impurities, and to solve its structure. The structure was refined against PXRD data of pure ITQ-53...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید