X
Search Filters
Format Format
Format Format
X
Sort by Item Count (A-Z)
Filter by Count
Journal Article (2355) 2355
Publication (132) 132
Conference Proceeding (34) 34
Book Chapter (10) 10
Dissertation (4) 4
Book Review (2) 2
Book / eBook (1) 1
more...
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
phosphotungstic acid (2013) 2013
microscopy, electron (638) 638
staining and labeling (619) 619
animals (509) 509
humans (330) 330
chemistry, physical (315) 315
tungsten compounds (248) 248
catalysis (243) 243
phosphates (208) 208
chemistry, multidisciplinary (194) 194
catalysts (185) 185
engineering, chemical (184) 184
rats (159) 159
chemistry (155) 155
oxidation (148) 148
methods (143) 143
male (140) 140
materials science, multidisciplinary (140) 140
centrifugation, density gradient (131) 131
performance (131) 131
silica (120) 120
electrochemistry (119) 119
nanoparticles (116) 116
adsorption (114) 114
histocytochemistry (114) 114
female (113) 113
hydrogen-ion concentration (108) 108
index medicus (108) 108
energy & fuels (101) 101
membranes (100) 100
analysis (96) 96
phosphotungstic-acid (94) 94
fuel cells (91) 91
viral proteins (90) 90
polymer science (88) 88
mice (86) 86
phosphotungstic acid - chemistry (82) 82
hydrogen-peroxide (81) 81
composite membranes (79) 79
protonenleitfähigkeit (77) 77
chemical precipitation (75) 75
ethanol (75) 75
temperature (75) 75
oxidative desulfurization (74) 74
uranium (71) 71
esterification (70) 70
dibenzothiophene (69) 69
methanol (69) 69
indicators and reagents (68) 68
poly (68) 68
polyoxometalate (68) 68
chemistry, applied (67) 67
proton conductivity (66) 66
catalyst-activity (64) 64
katalytische aktivität (64) 64
tungsten (64) 64
electric properties (61) 61
cell biology (60) 60
efficient (60) 60
conductivity (59) 59
ionic liquid (59) 59
physical chemistry (59) 59
catalyst (58) 58
metal-organic frameworks (58) 58
staining and labeling - methods (58) 58
acetates (57) 57
acids (57) 57
brennstoffzelle (55) 55
culture media (55) 55
degradation (55) 55
ionic liquids (55) 55
water (54) 54
physics, condensed matter (53) 53
solvents (53) 53
sucrose (53) 53
wolframatophosphorsäure (53) 53
12-tungstophosphoric acid (52) 52
heteropoly acids (52) 52
heteropolysäure (52) 52
ultracentrifugation (52) 52
komposit (51) 51
spectrophotometry (51) 51
acid (50) 50
chlorides (50) 50
heteropoly acid (50) 50
histological techniques (50) 50
polymers (50) 50
rabbits (50) 50
röntgendiffraktion (50) 50
silicon dioxide (50) 50
time factors (50) 50
x-ray-diffraction (50) 50
nanoscience & nanotechnology (49) 49
virology (49) 49
aldehydes (48) 48
biochemistry & molecular biology (48) 48
environmental sciences (48) 48
selective oxidation (48) 48
chemical properties (47) 47
chemical synthesis (47) 47
more...
Language Language
Language Language
X
Sort by Item Count (A-Z)
Filter by Count
English (2235) 2235
German (51) 51
French (32) 32
Chinese (31) 31
Japanese (20) 20
Russian (16) 16
Italian (8) 8
Portuguese (5) 5
Romanian (5) 5
Spanish (3) 3
Arabic (1) 1
Dutch (1) 1
Hungarian (1) 1
Korean (1) 1
Polish (1) 1
more...
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


Electrochimica Acta, ISSN 0013-4686, 06/2017, Volume 240, pp. 186 - 194
A novel approach to in-situ synthesize and encapsulate phosphotungstic acid into the cavity of MIL-101(Cr) using Na2WO4·2H2O and Na2HPO4 as precursors is... 
Encapsulation | Proton conductivity | Phosphotungstic acid | MOFs | Nanohybrid membrane | ELECTROCHEMISTRY | NAFION HYBRID MEMBRANE | PERFORMANCE | HUMIDITIES | PROPERTY | FUEL-CELL | TRANSPORT | TEMPERATURE | CONDUCTIVITY | Phosphates | Saline water conversion | Tungsten compounds | Fuel cells | Electric properties
Journal Article
Fuel, ISSN 0016-2361, 11/2018, Volume 231, pp. 271 - 280
High acid crude oils contain large amount of naphthenic acids which cause serious corrosion problem in petroleum industry. Therefore, the removal of naphthenic... 
Total Acid Number | Naphthenic acids | Esterification | TPA/γ-Al2O3 catalyst | Acidic crude oil | Methanol | catalyst | TPA/γ-Al | HETEROPOLY COMPOUNDS | GLYCEROL | 12-TUNGSTOPHOSPHORIC ACID | ENERGY & FUELS | TPA/gamma-Al2O3 catalyst | CORROSION | DECARBOXYLATION | KAOLIN | ENGINEERING, CHEMICAL | REMOVAL | BIODIESEL PRODUCTION | SINGLE-STEP ESTERIFICATION | VACUUM FRACTION
Journal Article
Journal of Membrane Science, ISSN 0376-7388, 2009, Volume 326, Issue 1, pp. 45 - 57
Sulfonated poly(ether ether ketone) (SPEEK)–silica membranes doped with phosphotungstic acid (PWA) are presented. The silica is generated in situ via the water... 
Hybrid membranes | Proton conductivity | Phosphotungstic acid | Morphology | Fuel cells | POLYMER ELECTROLYTE MEMBRANES | POLYMER SCIENCE | KETONE | STATE | COMPOSITE MEMBRANES | ENGINEERING, CHEMICAL | HETEROPOLY ACIDS | NANOCOMPOSITE MEMBRANES | METHANOL FUEL-CELLS | EXCHANGE MEMBRANES | SILICA | NAFION | Phosphates | Silica | Tungsten compounds | Electric properties
Journal Article
Ultrasonics - Sonochemistry, ISSN 1350-4177, 01/2017, Volume 34, pp. 713 - 720
In this work, ultrasound-assisted oxidative desulfurization (UAOD) of liquid fuels performed with a novel heterogeneous highly dispersed Keggin-type... 
Encapsulation | Oxidative desulfurization | Phosphotungstic acid | MOFs | Ultrasound waves | Fuel | MIL-101 | SULFUR REMOVAL | METAL-ORGANIC FRAMEWORK | 4,6-DIMETHYLDIBENZOTHIOPHENE | CHEMISTRY, MULTIDISCIPLINARY | ACOUSTICS | OIL | EFFICIENT | Phosphates | Amines | Leaching | Tungsten compounds | Analysis | Sulfur compounds | Acetonitrile
Journal Article
Applied Organometallic Chemistry, ISSN 0268-2605, 01/2018, Volume 32, Issue 1, pp. e3990 - n/a
A heterogeneous nanocatalyst based on a Cu(II) complex containing phosphotungstic acid and N/O‐donor ligands supported on cobalt ferrite nanoparticles was... 
acetaminophen | synergistic catalysis | organic–inorganic hybrid | phosphotungstic acid | cobalt ferrite | COFE2O4 | STEP | SOLVENT | CHEMISTRY, INORGANIC & NUCLEAR | NANOPARTICLES | NICKEL | CATALYTIC-OXIDATION | FRAMEWORK | CHEMISTRY, APPLIED | organic-inorganic hybrid | EFFICIENT | Lewis acid | Cobalt ferrites | Analgesics | Chemical synthesis
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 01/2019, Volume 60, Issue 2, pp. 201 - 206
[Display omitted] •Spiroquinazolinones were synthesized using phosphotungstic acid (HPW) as catalyst.•The method is optimized under HPW catalyst, neat and... 
Benzyne reaction | Quinazolinones | Phosphotungstic acid | Click chemistry | Eglinton coupling | Aminoamides | BRONSTED ACID | ONE-POT SYNTHESIS | CHEMISTRY, ORGANIC | CASCADE | CATALYST | HETEROPOLY ACIDS | DIELS-ALDER REACTION | CHEMISTRY | EFFICIENT
Journal Article
Journal of the American Chemical Society, ISSN 0002-7863, 12/2005, Volume 127, Issue 51, pp. 18274 - 18280
Solid-state 13C NMR experiments and quantum chemical Density Functional Theory (DFT) calculations of acetone adsorption were used to study the location of... 
HETEROPOLY COMPOUNDS | DODECATUNGSTOPHOSPHORIC ACID | PHOSPHOTUNGSTIC ACID | DOUBLE-RESONANCE NMR | 12-TUNGSTOPHOSPHORIC ACID | H-1 MAS NMR | TOTAL-ENERGY CALCULATIONS | ISOBUTANE/BUTENE ALKYLATION | CHEMISTRY, MULTIDISCIPLINARY | IN-SITU NMR | WAVE BASIS-SET | Protons | Density functionals | Nuclear magnetic resonance spectroscopy | Research | Analysis
Journal Article
Applied Catalysis A, General, ISSN 0926-860X, 06/2016, Volume 520, pp. 105 - 113
[Display omitted] •Cs exchanged STA catalysts are active for selective etherification of HMF.•Catalysts activity depends on the number of Cs ions in STA.•New... 
HMF | Silicotungstic acid | Cesium nitrate | Ethanol | Etherification | EMF | HETEROPOLY COMPOUNDS | CONVERSION | CHEMISTRY, PHYSICAL | PORE STRUCTURE | LIQUID-PHASE REACTIONS | ENVIRONMENTAL SCIENCES | FRUCTOSE | BIOMASS | DEHYDRATION | BIODIESEL | SUPPORTED PHOSPHOTUNGSTIC ACID | Biomass energy | Chemical properties | Catalysis | Catalysts | Tungsten compounds | Exchange | Ethyl alcohol | Constants | Biomass | Ion exchange
Journal Article
Journal of Molecular Catalysis. A, Chemical, ISSN 1381-1169, 06/2012, Volume 358, pp. 99 - 105
[Display omitted] ► Si-MCM-41 was modified by impregnation of HPW for the cyclization of (+)-citronellal. ► HPW was preferentially occluded inside MCM-41 pores... 
Molecular sieve MCM-41 | Brønsted acidity | 12-Tungstophosphoric acid | Supported heteropolyacid on MCM-41 | Cyclization of (+)-citronellal | PHOSPHOTUNGSTIC ACID | CHEMISTRY, PHYSICAL | STEP | MOLECULAR-SIEVE | CATALYTIC PERFORMANCE | HETEROPOLY ACIDS | Bronsted acidity | H3PW12O40 | KEGGIN | MENTHOL | N-HEXANE | CITRONELLAL
Journal Article
Chemical Engineering Science, ISSN 0009-2509, 12/2013, Volume 104, pp. 64 - 72
Fabrication of polyoxometalate-based sulfonated ionic liquid catalysts was achieved by combining phosphotungstic acid (HPW) and SO3H-functionalized zwitterion... 
Polyoxometalate | Catalytic activation | Phosphotungstic acid | Reaction engineering | Optimization | Fuel | ENGINEERING, CHEMICAL | OXIDE | OIL | CHEMICAL-SHIFT | TRANSESTERIFICATION | Catalysts | Tungsten compounds | Saturated fatty acids | Analysis | Biodiesel fuels | Ethanol | Reaction time | Ethyl alcohol | Ionic liquids | Catalysis | Palmitic acid | Biodiesel
Journal Article