However, the performance of PEEK in real downhole conditions remains unknown. In this study, we therefore investigated the evolution of the microstructural, chemical, and mechanical properties of PEEK subjected to hydrochloric acid (HCl), which is the main acid used in downhole applications, at ...
Biochar is known to decrease the soil acidity and in turn enhance the plant growth by increasing soil fertility. Major objective of the present work was to understand the effect of biochar treatment on alleviation of soil aluminium (Al) toxicity and its
Studies the effect of dielectric constant and ionic strength on the fading of N,N-dimethylaminophenolphthalein in alkaline medium. Utilization of acid-base indicators; Determination of equivalence point in a titration; Effects of ionic strength on solutions; Verification of Bronsted-Bjerrum-Debye theory...
The gastric ulcer disease was observed to correlate with changes in several physiological parameters, such as Reactive oxygen species (ROS), NO, lipid peroxidation and gastric acid over secretion [4]. Treatment of gastric ulcer is considered a clinical problem due to the increasingly widespread use...
Table 2: Effect of Strong Acid and Strong Base on Buffers |Solution |Estimated pH range |pH | | |+ Methyl Orange |+ Phenolphthalein |pH meter |Calculated | |1 |A (+HCl) |1 < x < 3.04 | |2.47 |2.86 | | |B (+NaOH) |3.04 < x < 7 | |3.72 |2.88 | ...
A feasibility study was carried out on generation of hydrochloric acid and lithium hydroxide from the simulated lithium chloride solution using EX3B model
Filler chemistry and its effect on the thermal properties of the polyarylate based on terephthalic acid and phenolphthaleinThe differences have been established between the thermal stabilities of the original components and the filler-containing systems based on them. The filled polyarylate, i.e. the ...
[61]. Briefly, 1 g of purified PBS-g-MAH was refluxed for 1 h in 100 mL of chloroform. Then, 10 mL of distilled water were added and titrated immediately with 0.025 M potassium hydroxide (KOH, Sigma-Aldrich S.A.) using phenolphthalein (Fisher Scientific SL, Madrid, Spain) as ...
base titration. At the beginning, the suspensions were prepared using 0.1 g of biochars and 10 mL of the following reagents: 0.1 mol/L HCl and 0.1 mol/L NaOH. The mixture was stirred for 24 h. After filtration, phenolphthalein was added as an indicator to 5 mL of the filtered solutions...
After that, 25 mL of the obtained solutions were titrated with NaOH solution (0.1 M) in the presence of phenolphthalein as a chemical indicator. The ion exchange capacities of H.ZA and DH.ZA were measured by the BaCl2 technique based on the reported procedures by [32]. The surface area ...