Up-conversion characteristic and Judd-Ofelt calculation of BaGd2ZnO5:Er3+/Yb3+ microcrystalline powder

2019 ◽  
Vol 88 ◽  
pp. 570-575
Author(s):  
Chunhui Niu ◽  
Ting Zhu
Keyword(s):  
Conversion Characteristic ◽  
Microcrystalline Powder

scholarly journals Extraction of γ-Alumina from Low-Cost Kaolin

Resources ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 63
Author(s):  
Khalil Ibrahim ◽  
Mohammad Moumani ◽  
Salsabeela Mohammad
Keyword(s):  
Low Cost ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Aluminum Metal ◽  
Alumina Particles ◽  
Two Stages ◽  
Method Of Extraction ◽  
Microcrystalline Powder ◽  
Made In

A combined process is proposed for the utilization of local kaolin to produce alumina particles. The applied process is made in two stages: calcination at 700 °C with sodium chloride and leaching with sulfuric followed by hydrochloric acids. The optimal extraction efficiency can be obtained when the conditions are as follows: leaching temperature is at 140 °C, leaching time is 3 h 45 min and concentration of sulfuric acid is 40 wt.%. The results show that the purity of alumina reaches 79.28%, which is suitable for the production of aluminum metal. It is evident that this method of extraction of alumina from the kaolin ash is practical and feasible. The structural and morphological properties of the calcined microcrystalline powder was characterized by X-ray diffraction and scanning electron microscope (SEM).

Studies on the mass and temperature dependence of lyoluminescence intensity of microcrystalline powder of KCl

Luminescence ◽  
2010 ◽  
Vol 26 (5) ◽  
pp. 324-330 ◽  
Author(s):  
V. Nayar ◽  
P. S. Chowdhary ◽  
P. M. Bhujbal ◽  
S. J. Dhoble
Keyword(s):  
Temperature Dependence ◽  
Microcrystalline Powder

Effect of density on physicochemical and thermal conversion characteristic of Naomaohu coal

Fuel ◽  
2021 ◽  
Vol 284 ◽  
pp. 119045
Author(s):  
Tianju Chen ◽  
Ruowei Dai ◽  
Dominic Yellezuome ◽  
Ke Zhang ◽  
Ruidong Zhao ◽  
...  
Keyword(s):  
Thermal Conversion ◽  
Conversion Characteristic

scholarly journals Anisotropic superconducting properties of the aligned Sm 0.95 La 0.05 FeAsO 0.85 F 0.15 microcrystalline powder

2008 ◽  
Vol 84 (6) ◽  
pp. 67014 ◽  
Author(s):  
B. C. Chang ◽  
C. H. Hsu ◽  
Y. Y. Hsu ◽  
Z. Wei ◽  
K. Q. Ruan ◽  
...  
Keyword(s):  
Superconducting Properties ◽  
Microcrystalline Powder

A study of optical properties of Tm3+ ions in Y2Te4O11 microcrystalline powder

2018 ◽  
Vol 202 ◽  
pp. 354-362 ◽  
Author(s):  
Damian Szymański ◽  
Marcin Sobczyk ◽  
Radosław Lisiecki
Keyword(s):  
Optical Properties ◽  
Microcrystalline Powder

A Novel Biomass Gasifier for Producing Tar-Free and Hydrogen-Rich Syngas

2010 ◽  
Vol 105-106 ◽  
pp. 709-712 ◽  
Author(s):  
Zhi Guo Tang ◽  
P.Y. Ma ◽  
J.P. Cheng ◽  
Y.L. Li ◽  
Q.Z. Lin
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Excess Enthalpy ◽  
Biomass Gasification ◽  
Structure Characteristic ◽  
Gasification Process ◽  
Conversion Characteristic ◽  
The Future

Hydrogen from biomass gasification is reviewed as one of the promising clean energies approaches in the future for fuel cell. However, the syngas from biomass gasification usually contains a certain amount of tar, which could not only decrease the efficiency of gasification process and hydrogen production, but also condense as a dense mixture and impose a series of serious problems. So “Excess Enthalpy Gasification (EEG)” is put forward and applied into biomass gasification and a novel biomass gasifier is presented for the purpose of tar-free and hydrogen-rich syngas in this work. The structure characteristic of the gasifier and tar conversion characteristic are analyzed detailedly to prove the feasibility and excellence performance for producing tar-free and hydrogen-rich syngas from biomass gasification.

Structure of N-(5-ethyl-[1,3,4]-thiadiazole-2-yl)toluenesulfonamide by combined X-ray powder diffraction, 13C solid-state NMR and molecular modelling

2010 ◽  
Vol 66 (6) ◽  
pp. 615-621 ◽  
Author(s):  
Adriana Hangan ◽  
Gheorghe Borodi ◽  
Xenia Filip ◽  
Carmen Tripon ◽  
Cristian Morari ◽  
...  
Keyword(s):  
Solid State ◽  
Powder Diffraction ◽  
Molecular Modelling ◽  
Solid State Nmr ◽  
X Ray ◽  
Structure Solution ◽  
Non Covalent Interactions ◽  
Projector Augmented Wave ◽  
Covalent Interactions ◽  
Microcrystalline Powder

The crystal structure solution of the title compound is determined from microcrystalline powder using a multi-technique approach that combines X-ray powder diffraction (XRPD) data analysis based on direct-space methods with information from 13C solid-state NMR (SSNMR), and molecular modelling using the GIPAW (gauge including projector augmented-wave) method. The space group is Pbca with one molecule in the asymmetric unit. The proposed methodology proves very useful for unambiguously characterizing the supramolecular arrangement adopted by the N-(5-ethyl-[1,3,4]-thiadiazole-2-yl)toluenesulfonamide molecules in the crystal, which consists of extended double strands held together by C—H...π non-covalent interactions.

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