Template-Free Synthesis of Hierarchical Nanocrystal UiO-66 and Its Adsorption Thermodynamics for nHEP/MCH

CrystEngComm ◽  
2021 ◽  
Author(s):  
ZONG JIAN LIU ◽  
Zhicong Sun ◽  
Lin Zhang ◽  
Lifei Xu ◽  
Xinyue Lu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ammonium Hydroxide ◽  
Adsorption Thermodynamics ◽  
Crystallization Method ◽  
Reaction Solution ◽  
Template Free

Hierarchical nanocrystal UiO-66 was synthesized by a template-free double-solvent–modulated crystallization method. The influences of ammonium hydroxide (NH4OH) /Zr, acetic acid (HAC) /Zr ratio and pH of reaction solution on the...

Comparative Studies of Thin Layer Chromatographic Systems for the Separation and Identification of Photoalteration Products of Parathion

1973 ◽  
Vol 56 (2) ◽  
pp. 338-340
Author(s):  
Ronald L Joiner ◽  
Karl P Baetcke
Keyword(s):  
Acetic Acid ◽  
Thin Layer ◽  
Petroleum Ether ◽  
Infrared Spectra ◽  
Ethyl Ether ◽  
Comparative Studies ◽  
Glacial Acetic Acid ◽  
Ammonium Hydroxide ◽  
Rf Values

Abstract Twelve thin layer chromatographic systems were compared for the separation of photoalteration products of parathion. Rf values for each component in each system are presented. Infrared spectra confirmed the identity of separated components. The following 4 systems were designated superior and gave excellent separation of the components: petroleum ether-ethyl ether-glacial acetic acid (80+15+5 and 50+45+5), methanol-chloroform-ammonium hydroxide (24+75+3.5), and methanol-chloroform-petroleum ether (10+20+70).

Adjuvant and pH Effects on Sethoxydim and Clethodim Activity on Rhizome Johnsongrass (Sorghum halepense)

1989 ◽  
Vol 3 (4) ◽  
pp. 615-620 ◽  
Author(s):  
David C. Bridges
Keyword(s):  
Acetic Acid ◽  
Calcium Hydroxide ◽  
Glacial Acetic Acid ◽  
Ph Dependence ◽  
Ammonium Hydroxide ◽  
Sorghum Halepense ◽  
Ph Effects ◽  
Ph Range

Rhizome johnsongrass control with sethoxydim and clethodim was evaluated with the addition of three adjuvants: Agrioil3, BAS8153, and Li7003. Johnsongrass control was similar with the three adjuvants when either sethoxydim or clethodim was applied alone, but when bentazon was added, johnsongrass control declined with both sethoxydim and clethodim. Control generally declined less with BAS815 than with Agrioil or Li700, but the addition of BAS815 did not completely reverse the effects of adding bentazon to sethoxydim or clethodim. Johnsongrass control was not affected by adjusting pH when sethoxydim or clethodim was applied with bentazon and Agrioil. Johnsongrass control over a pH range of 3.5 to 6.5 via the addition of glacial acetic acid and calcium hydroxide or ammonium hydroxide indicated a lack of pH dependence for these herbicides. The addition of ammonium hydroxide resulted in slight, but inconsistent increases in johnsongrass control.

Synthesis of colloidal PbS nanosheets with nearly 100% success rate

MRS Advances ◽  
2017 ◽  
Vol 2 (60) ◽  
pp. 3703-3708 ◽  
Author(s):  
Shashini M Premathilaka ◽  
Zhoufeng Jiang ◽  
Antara Antu ◽  
Joey Leffler ◽  
Jianjun Hu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Success Rate ◽  
Lead Acetate ◽  
Lead Oxide ◽  
Lateral Size ◽  
Robust Method ◽  
Reaction Solution

ABSTRACTWe report a robust method by which colloidal PbS nanosheets can be synthesized with nearly 100% success rate. It is achieved by replacing the lead acetate by lead oxide for preparation of the lead precursor. Acetic acid either injected externally or produced during the reaction can significantly affect the growth of the nanosheets. The existence of water in the reaction solution makes the nanosheets smaller in lateral size while the purity of trioctylphosphine has no significant effect on the nanosheet growth.

A Highly Efficient Heterogeneous Ruthenium-Catalysed Oxidative α-Cyanation of Tertiary Amines Leading to α-Aminonitriles

2017 ◽  
Vol 41 (10) ◽  
pp. 576-580 ◽  
Author(s):  
Xiaoming Wang ◽  
Ruian Xiao ◽  
Jingting Ai ◽  
Mingzhong Cai
Keyword(s):  
Acetic Acid ◽  
Significant Loss ◽  
Ruthenium Catalyst ◽  
Tertiary Amines ◽  
Highly Efficient ◽  
Reaction Solution ◽  
Step Procedure ◽  
Mcm 41

Oxidative α-cyanation of tertiary amines was achieved by using an MCM-41-immobilised N-alkylethylenediamine ruthenium(III) complex (MCM-41-2N-RuCl3) as catalyst in MeOH at 60 °C in the presence of H2O2 as oxidant and NaCN in acetic acid as a cyanide source to afford the corresponding α-aminonitriles in good yields. The new heterogeneous ruthenium catalyst can easily be prepared by a simple two-step procedure from commercially readily available and inexpensive reagents. It can be recovered by filtration of the reaction solution and reused at least 7 times without significant loss of activity.

scholarly journals TECHNO-ECONOMIC EVALUATION OF NITROCELLULOSE PRODUCTION FROM PALM OIL EMPTY FRUIT BUNCHES

2021 ◽  
Vol 11 (4) ◽  
pp. 246-254
Author(s):  
Jabosar Ronggur Hamonangan Panjaitan ◽  
Misri Gozan
Keyword(s):  
Acetic Acid ◽  
Economic Evaluation ◽  
Sulfuric Acid ◽  
Sodium Hydroxide ◽  
Palm Oil ◽  
Ammonium Hydroxide ◽  
Raw Material ◽  
Acid Pretreatment ◽  
Empty Fruit Bunches ◽  
Sulfuric Acid Pretreatment

Nitrocellulose is a cellulose derivative that has many potential applications. Nitrocellulose can bemade through nitration reactions by reacting cellulose and nitric acid at low temperatures. Cellulose can be obtained from lignocellulose biomass such as palm oil empty fruit bunches (POEFBs). In this study, techno-economic evaluation of nitrocellulose production from POEFBs was investigated with various types of alkaline and acid pretreatments. Pretreatment of POEFBs with alkaline and acid was used to purify cellulose fraction as raw material for nitrocellulose. The combination process of POEFBs pretreatment with alkaline and acid can be classified into 4 process routes such as ammonium hydroxide and sulfuric acid pretreatment (Route-1), ammonium hydroxide and acetic acid pretreatment (Route-2), sodium hydroxide and sulfuric acid pretreatment (Route-3), and sodium hydroxide and acetic acid pretreatment (Route-4). The results showed that ammonium hydroxide and sulfuric acid pretreatment (Route-1) was the most profitable route to produce nitrocellulose. Economic parameter values such as return of investment (ROI), payback period (PBP), net present value (NPV) and internal rate of return (IRR) from ammonium hydroxide and sulfuric acid pretreatment (Route-1) were 11.49%, 5.85 years, US$ 442,427 and 13.35%.

Micro and Nano Design and Fabrication of a Novel Artificial Photosynthesis Device

2012 ◽  
Author(s):  
Xiang Ren ◽  
Qingwei Zhang ◽  
Ho-lung Li ◽  
Jack Zhou
Keyword(s):  
Acetic Acid ◽  
Rapid Prototyping ◽  
Artificial Photosynthesis ◽  
3D Scaffold ◽  
Light Reaction ◽  
Chitosan Scaffold ◽  
Reaction Solution ◽  
Micro Channels ◽  
Porous Chitosan ◽  
Proper Material

Artificial photosynthesis is a new method to generate sustainable energy. In order to constrain reaction solution in a solid state structure and increase the reaction efficiency, we designed a novel artificial photosynthesis device with porous chitosan scaffold with interconnected micro-channels. We built 3D interconnected chitosan channels with a home-made heterogeneous 3D rapid prototyping machine, and we used lyophilization method to generate the nano pores inside the chitosan scaffold. Chitosan gel in acetic acid can form different viscosities by different chitosan’s molecular weight and the different concentrations of both chitosan and the acetic acid, so we found a proper material recipe to construct 3D scaffold by our own rapid prototyping machine. Optional support material sodium bicarbonate is used in printing 3D scaffold for holding the printed structure permanently, and the result shows that this method can make the scaffold stronger and harmless to further processes such as adding light reaction units and dark reaction solution into the device.

The template-free synthesis of hierarchically porous anatase TiO2via acid-etching for enhancing the cycling stability and reversible capacity of lithium ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48985-48994 ◽  
Author(s):  
Xiaobing Wang ◽  
Zhichao Jia ◽  
Fuyuan Liu ◽  
Huijun Liang ◽  
Xinxin You ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Electrochemical Stability ◽  
Acid Etching ◽  
Two Dimensional ◽  
Hierarchically Porous ◽  
High Reversible Capacity ◽  
Template Free

Two-dimensional hierarchically porous anatase TiO2 is fabricated through acetic acid etching. It exhibit high electrochemical stability and high reversible capacity in lithium ion battery.

scholarly journals Field Dissipation and Storage Stability of Glufosinate Ammonium and Its Metabolites in Soil

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Yun Zhang ◽  
Kai Wang ◽  
Junxue Wu ◽  
Hongyan Zhang
Keyword(s):  
Acetic Acid ◽  
Storage Stability ◽  
Correlation Coefficients ◽  
Ammonium Hydroxide ◽  
Soil Samples ◽  
Agricultural Products ◽  
Glufosinate Ammonium ◽  
Relative Standard ◽  
And Storage ◽  
Different Levels

A simple analytical method was developed to measure concentrations of glufosinate ammonium and its metabolites, 3-methylphosphinico-propionic acid (MPP) and 2-methylphosphinico-acetic acid (MPA), in field soil samples. To determine the minimum quantification limit, samples were spiked at different levels (0.1, 0.5, and 1.0 mg/kg). Soil samples were extracted with ammonium hydroxide solution 5% (v/v), concentrated, and reacted with trimethyl orthoacetate (TMOA) in the presence of acetic acid for derivatization. The derivatives were quantified by gas chromatography (GC) using a flame photometric detector (FPD). The linear correlation coefficients of glufosinate ammonium, MPP, and MPA in soil were 0.991, 0.999, and 0.999, respectively. The recoveries of this method for glufosinate ammonium, MPP, and MPA in soil were 77.2–95.5%, 98.3–100.3%, and 99.3–99.6% with relative standard deviations (RSD) of 1.8–4.1%, 0.4–1.4%, and 1.3–2.0%, respectively. Glufosinate ammonium dissipated rapidly in soil to MPA in hours and gradually degraded to MPP. The half-life of glufosinate ammonium degradation in soil was 2.30–2.93 days in an open field. In soil samples stored at −20°C glufosinate ammonium was stable for two months. The results of this study should provide guidance for the safe application of the herbicide glufosinate ammonium to agricultural products and the environment.

Preliminary investigation of the aqueous leaf extract of Chrysophyllum albidum George Don (Sapotaceae) in laboratory-induced cough

2021 ◽  
Vol 1 (1) ◽  
pp. 006-017
Author(s):  
Esther Oluwatoyin Agbaje ◽  
Kennedy Chibogu Nzeh
Keyword(s):  
Acetic Acid ◽  
Preliminary Investigation ◽  
Ammonium Hydroxide ◽  
Forest Tree ◽  
Common Symptom ◽  
Medicinal Uses ◽  
Treatment Groups ◽  
Aqueous Leaf Extract ◽  
Group 2 ◽  
Antitussive Activity

Cough is the most common symptom of respiratory diseases, however, in distressing and severe cases, opioids are effective, but their use has been challenged by side effects such as sedation, constipation; also, by some addictive liability, as well as the compromise of respiratory function. Therefore, there is a dire need for effective antitussives that will override the limitations of the opioids. Chrysophyllum albidum (Linn), family Sapotaceae, and also known as African star apple is primarily a forest tree species with its natural occurrences in diverse ecozones in Uganda, Nigeria and Niger Republic. Across Nigeria, it is known by several local names, for example, as ‘Agbalumo’ in Yoruba, and is generally regarded as a plant with diverse ethno-medicinal uses, including the treatment of cough and asthma. The present study was designed to evaluate possible antitussive activity of Chrysophyllum albidum. Cough was induced in the animals using 25 % ammonium hydroxide- and acetic acid (concentrated), after which the mice were randomized into treatment groups as follows: (Group 1, normal control), 10 mg/kg dextromethorphan (Group 2), 5.7 mg/kg codeine (Group 3), 100, 200 and 400 mg/kg, Chrysophyllum albidum (groups 4, 5 and 6). Cough induction was carried out in an enclosed dessicator for one minute and the number of coughs was, counted and recorded for five minutes. The animals were further exposed at 30, 60, 90 and 120 minutes. The same procedure was repeated for acetic acid-induced cough. Chrysophyllum albidum showed significant antitussive activity (p<0.001) in both ammonium hydroxide and acetic acid-induced cough model. The findings in this study validates the folkloric use of Chrysophyllum albidum in alleviating cough.

Salt Antagonism of Glyphosate

Weed Science ◽  
1991 ◽  
Vol 39 (4) ◽  
pp. 622-628 ◽  
Author(s):  
John D. Nalewaja ◽  
Robert Matysiak
Keyword(s):  
Acetic Acid ◽  
Sodium Bicarbonate ◽  
Calcium Chloride ◽  
Ammonium Acetate ◽  
Ammonium Hydroxide ◽  
Ammonium Cation ◽  
Ammonium Salts ◽  
Calcium Magnesium ◽  
Diammonium Sulfate ◽  
Ammonium Compounds

Glyphosate is often applied with diammonium sulfate to increase weed control. However, many other salts in the spray carrier have antagonized glyphosate phytotoxicity. Research was conducted with wheat as a bioassay species to further determine the influence of various salts on glyphosate phytotoxicity. Cation antagonism of glyphosate occurred with iron > zinc > calcium ≥ magnesium > sodium > potassium. Ammonium cation with hydroxide or most other anions was not antagonistic. Anions of ammonium compounds were of primary importance in overcoming glyphosate antagonistic salts, while the ammonium cation was neutral or slightly stimulatory with certain anions. Sulfate, phosphate, citrate, and acetate anions were not antagonistic, but nitrate and chloride anions were slightly antagonistic when applied as ammonium salts or acids. Antagonism of glyphosate action by sodium bicarbonate and calcium chloride was overcome by phosphoric, sulfuric, and citric acid and phosphate, sulfate, and citrate ammonium salts. Acid and ammonium salts of nitrate and chloride were more effective in overcoming sodium bicarbonate than calcium chloride antagonists of glyphosate. Ferric sulfate antagonism was overcome only by citric, partly by phosphoric and sulfuric but not by nitric and hydrochloric acids or their ammonium salts. Acetic acid, ammonium acetate, and ammonium hydroxide did not overcome any salt antagonism of glyphosate. Glyphosate response to salts was independent of spray carrier pH.

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