搜索结果: 1-15 共查到“Sulfuric acid”相关记录26条 . 查询时间(0.109 秒)
Sulfuric acid recovery from titanium white (pigment) waste liquor using diffusion dialysis with a new series of anion exchange membranes—static runs
Ion exchange membrane Diffusion dialysis Titanium white waste liquor Poly(2,6-dimethyl-1,4-phenylene oxide)
2016/3/25
In this paper, a new series of anion exchange membranes have been produced from linear engineering plastics poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) by conducting the processes of bromination, chl...
An empirical approach to the nucleation of sulfuric acid droplets in the atmosphere
nucleation Gibbs energy aerosol microphysics
2015/9/16
We use quantum mechanical evaluations of the Gibbs free energy of the hydrates of sulfuric acid, H2SO4. nH2O and (H2SO4)2
. nH2O to evaluate an empirical surface tension for sulfuric acid-water clust...
Biodiesel Production from Waste Cooking Oil Using Sulfuric Acid and Microwave Irradiation Processes
Biodiesel Waste Cooking Oil Free Fatty Acid Sulfuric Acid Microwave-Assisted Transesterification
2013/3/11
A comparative study of biodiesel production from waste cooking oil using sulfuric acid (Two-step) and microwave-assisted transesterification (One-step) was carried out. A two-step transesterification ...
Sulfuric Acid ([3-(3-Silicapropyl)sulfanyl]propyl)ester as a Recyclable Catalyst for the Synthesis of 4,4'-(Arylmethylene)bis(1H-pyrazol-5-ols)（图）
sulfuric acid sulfanyl]propyl)ester silica-bonded N-propyl sulfamic acid 3-methyl-l-phenyl-5-pyrazolone aldehydes
2013/10/12
Sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl)ester is employed as a recyclable catalyst for the condensation reaction between aromatic aldehydes and 3-methyl-l-phenyl-5-pyrazolone. This condensat...
Silica Sulfuric Acid: An Efficient Heterogeneous Catalyst for the One-Pot Synthesis of 1,4-Dihydropyridines under Mild and Solvent-Free Conditions（图）
aldehyde ethyl acetoacetate ammonium acetate silica sulfuric acid 1,4-dihydropyridine
2013/10/12
A series of 1,4-dihydropyridines have been prepared by a one-pot condensation of aldehydes, ethyl acetoacetate, and ammonium acetate in the presence of a heterogeneous catalyst silica sulfuric acid at...
Enhancing effect of dimethylamine in sulfuric acid nucleation in the presence of water – a computational study
dimethylamine sulfuric acid nucleation the presence of water
2010/8/13
We have studied the hydration of sulfuric acid – ammonia and sulfuric acid – dimethylamine clusters using quantum chemistry. We calculated the formation energies and thermodynamics for clusters of one...
The roles of sulfuric acid in new particle formation and growth in the mega-city of Beijing
sulfuric acid new particle formation and growth the mega-city of Beijing
2010/8/13
Simultaneous measurements of gaseous sulfuric acid and particle number size distributions were performed to investigate aerosol nucleation and growth during CAREBeijing-2008. The analysis of the measu...
Dental Erosion and Sulfuric Ion Exposure Levels in Individuals Working with Sulfuric Acid in Lead Storage Battery Manufacturing Plant Measured with Mouth-rinse Index
Dental erosion Occupational health Battery manufacturing plant
2011/6/10
To investigate dental erosion in employees working with sulfuric acid at a lead storage battery manufacturing plant and level of personal exposure to sulfuric ions, we measured sulfuric ion concentrat...
Dental Erosion in Workers Exposed to Sulfuric Acid in Lead Storage Battery Manufacturing Facility
Dental erosion Occupational health Battery manufacturing facility
2010/12/1
Dental erosion, and specifically its symptoms, has long been studied in Japan as an occupational dental disease. However, in recent years, few studies have investigated the development of this disease...
Homogeneous nucleation of sulfuric acid and water mixture: experimental setup and first results
Homogeneous nucleation sulfuric acid and water mixture
2010/8/12
In this study we introduce a new flow tube suitable for binary and ternary homogeneous nucleation studies. The production of sulfuric acid and water vapor mixture, the experimental setup and the metho...
An efficient one pot synthesis of 1,4-dihydropyridines using alumina sulfuric acid (ASA) catalyst
Hantzsch 1 4-dihydropyridines ASA catalyst one pot conversion
2010/4/8
An efficient synthetic method for 1,4-dihydropyridines has been developed using 3 or 4 component condensation reactions of aldehydes, 1,3-dicarbonyl compounds, and ammonium acetate in the presence of ...
Degradation Kinetics of Xylose and Glucose in Hydrolysate Containing Dilute Sulfuric Acid
biomass xylose glucose
2009/11/16
In preparation of fuel alcohol from biomass as feedstock, hydrolysis with dilute acid as catalyst is one way to produce fermentable saccharide, xylose and glucose. However, the acid is also the cataly...
Hot Filtration: A Way to Enhance the Recovery of Chromite in Sulfuric Acid Leaching,with or without the Addition of Perchloric Acid
Leaching Chromite Hexavalent chromium Sulfuric acid Perchloric acid
2009/10/9
Ahi gh grade chromite concentrate obtained from the Pınarba¸sı region of Kayseri province in Turkey was reacted with a solution of sulfuric acid and perchloric acid at atmospheric pres...
Sulfuric acid and OH concentrations in a boreal forest site
Sulfuric acid OH concentrations boreal forest site
2009/10/9
As demonstrated in a number of investigations, gaseous sulfuric acid plays a central role in atmospheric aerosol formation. Using chemical ionization mass spectrometer the gas-phase sulfuric acid and ...
Corrigendum to “The role of ammonia in sulfuric acid ion induced nucleation”published in Atmos. Chem. Phys., 8, 2859–2867, 2008
ammonia sulfuric acid ion nucleation
2009/10/9
We have found some numerical errors in our paper “The
role of ammonia in sulfuric acid ion induced nucleation”
by I. K. Ortega et al. (Atmos. Chem. Phys., 8, 2859–
2867, 2008). We discovered that i...