Only in Titles

           Search results for: 5-Bromo-2-hydroxynicotinic acid CAS: [104612-36-4]    

paperclip

#   // Save this To Up


1534 related Products with:



Related Pathways

  •  
  • No related Items
paperclip

#32058907   // Save this To Up

Production of bioethanol from unwashed-pretreated rapeseed straw at high solid loading.

Reduction in water consumption and increase in ethanol concentration are two main challenges for bioethanol production from lignocellulosic materials. To address the two challenges, the aim of this work was to study the production of bioethanol from unwashed-pretreated rapeseed straw (RS) at high solid loading. RS pretreated with 1% (w w) HSO at 160 °C for 10 min resulted in excellent digestibility and fermentability of pretreated RS. The unwashed-pretreated RS was subjected to presaccharification and fed-batch simultaneous saccharification and fermentation (P-FB-SSF) at a final solid loading of 22% (w w). Ethanol concentration and ethanol yield of 53.1 g L (equivalent to 4.1% (w w) based on fermentation slurry) and 72.4% were obtained, respectively. In total, 92.1 g water g ethanol was consumed, a much smaller amount than that observed with washing after pretreatment or fermentation performed at lower solid loading.

1005 related Products with: Production of bioethanol from unwashed-pretreated rapeseed straw at high solid loading.

Z-ATAD-FMK; Appearance Ly Atherosclerosis (Human) A Red Load Taq Master high Z-ATAD-FMK; Appearance Ly Red Load Taq Master high Atherosclerosis (Mouse) A Angiogenesis (Human) Anti Rabbit Anti-ATP6V1G2 V-AT IWP-2; Appearance Beige s Caspase-12 Inhibitor Z-AT Atrazine C8H14ClN5 CAS: 1 NDSB-201; Appearance Whit

Related Pathways

paperclip

#   // Save this To Up


2842 related Products with:



Related Pathways

  •  
  • No related Items
paperclip

#   // Save this To Up


1756 related Products with:



Related Pathways

  •  
  • No related Items
paperclip

#32055370   // Save this To Up

The acidic nature of "NMR-invisible" tri-coordinated framework aluminum species in zeolites.

The unambiguous characterization of different acid sites in zeolites is of great importance for understanding their catalytic performance and the rational design of highly efficient zeolite catalysts. In addition to various well-characterized extra-framework Al species, a tri-coordinated framework aluminum species can also serve as a Lewis acid site in zeolites, which is "NMR-invisible" owing to its extremely distorted local environment. Here we provide a feasible and reliable approach to elucidate the acidic nature of the tri-coordinated framework Al in dehydrated H-ZSM-5 zeolites sensitivity-enhanced two-dimensional (2D) multiple nuclear correlation NMR experiments coupled with trimethylphosphine oxide (TMPO) probe molecules. Two types of tri-coordinated framework Al sites have been unambiguously identified, which amount to 11.6% of the total Brønsted and Lewis acid sites. Furthermore, it was found that synergistic effects arising from the close spatial proximity between the tri-coordinated framework Al site and the Brønsted acid site lead to the generation of superacidity (with an acid strength stronger than 100% HSO) in the zeolite.

1179 related Products with: The acidic nature of "NMR-invisible" tri-coordinated framework aluminum species in zeolites.

Thermal Shaker with cooli Integrin alphaX antibody Integrin β1 (CD29) Antib Monkey Interleukin-4(IL4) INPP5F antibody Source Ra ELISA Microplate Reader ( Influenza A H5N1 (Avian F FDA Standard Frozen Tissu Interferon alpha-6 antibo Integrin alpha6 antibody Integrin â3 (Phospho Tyr MultiGene Gradient therm

Related Pathways

paperclip

#32053035   // Save this To Up

Determination of sulphonated quinophthalones in Quinoline Yellow and its lakes using high-performance liquid chromatography.

Quinoline Yellow (QY, Colour Index No. 47005) is internationally used as a colour additive in foods, drugs, and cosmetics. The manufacture of QY requires sulphonating quinophthalone, and depending on the degree of sulphonation, various forms of QY result, containing different proportions of quinophthalone mono-, di-, and trisulfonic acid sodium salts (monoSA, diSA, and triSA, respectively). Regulations on the specific composition and uses of QY differ across countries with associated differences in names for QY. The QY form certified for use in the U.S. in drugs and cosmetics is known as D&C Yellow No. 10 (Y10). The Code of Federal Regulations (CFR) specifies that Y10 and its lakes consist of predominantly monoSA's, the sum of whose levels is ≥ 75%, and that the sum level of diSA's is ≤ 15%, with one of them (6'8'diSA) at ≤ 3%. The present work reports the development of an HPLC method for determining those CFR-specified values and the level of a non-CFR-specified component, 6'8'5triSA. The selected analytes, 6'SA, 6'5diSA, 6'8'diSA, and 6'8'5triSA, were quantified by using five-point-calibration curves (R > 0.999) with data-point ranges of 9.96-96.53%, 0.54-21.69%, 0.10-5.00%, and 0.11-5.53% by weight, respectively. The method was found to be precise (relative standard deviation values, 0.55-0.80%) and accurate (recovery values, 91.07-99.45%). LOD and LOQ values, respectively, were as follows: 1.23 and 3.70%, 6'SA; 0.42 and 1.26%, 6'5diSA; 0.11 and 0.34%, 6'8'diSA; and 0.01 and 0.04%, 6'8'5triSA. The HPLC method was applied successfully to the analysis of 20 Y10 and eight Y10 lake samples. It can be extended to other QY forms such as E104 and Yellow 203 because it enables analysis of 6'8'5triSA. This paper also addresses the implications of the varying structure depictions and CAS numbers of the QY components that are due to the existence of three tautomeric forms of quinophthalone.

1666 related Products with: Determination of sulphonated quinophthalones in Quinoline Yellow and its lakes using high-performance liquid chromatography.

EnzyChrom™ Kinase Assay Caspase-12 Inhibitor Z-AT High density (188 cases 2 Caspase-13 Inhibitor LEED ELISA Human , Interleukin Caspase-Family Inhibitor Colon cancer high density Caspase-9 Inhibitor Z-LEH High density liver cancer Caspase-4 Inhibitor Z-LEV Caspase-1 Inhibitor Z-YVA Cathepsin B&L Inhibitor Z

Related Pathways