Sodium hydroxide

CuO nanoparticles were synthesized by alcohol-assisted hydrothermal method at various pH values, using sodium hydroxide as a precursor for pH control. The chemical composition, morphological and structural properties of the obtained CuO nanoparticles were investigated by the Raman and energy-dispersive X-ray spectroscopies, the field-emission scanning electron microscopy, and the X-ray diffraction.

12p dianmotminh02 03-05-2024 2 1   Download

Ebook "Acid-base diagrams" provide a simple guide to the fundamentals and applications of acid-base diagrams, avoiding complex mathematics. This textbook is richly illustrated and has full color throughout. It offers learning features such as boxed results and a collection of formulae.

144p tracanhphuonghoa1007 22-04-2024 7 2   Download

Rice straw contains more than 35% of cellulose.This material presents a potential feedstock for bioethanol production. In this study, the two-stage pretreatment of Q5 specie rice straw was used for preparation of cellulosic pulp for enzymatic saccharification.

6p vilarry 01-04-2024 5 1   Download

Ebook "Clean hydrogen production methods" covers novel techniques for clean hydrogen production which primarily involve sodium hydroxide as an essential ingredient to the existing major hydrogen production technologies. Interestingly, sodium hydroxide plays different roles and can act as a catalyst, reactant, promoter or even a precursor. The inclusion of sodium hydroxide makes these processes both kinetically and thermodynamically favorable.

75p tudohanhtau1006 29-03-2024 1 1   Download

Geopolymer has emerged as the potential alternative to Portland cement in recent years. In addition, fly ash and recycled glass are abundant by-products derived from the industry. The purpose of this study was to evaluate the potential of using recycled glass to replace the sand aggregate in slagblended fly ash-based geopolymer mortar.

7p viisac 15-09-2023 4 2   Download

Giáo án Hóa học lớp 11 - Bài 17: Phenol (Sách Chân trời sáng tạo) được biên soạn với mục tiêu nhằm giúp học sinh nêu được khái niệm về phenol, tên gọi, công thức cấu tạo một số phenol đơn giản, đặc điểm cấu tạo và hình dạng phân tử của phenol; nêu được tính chất vật lí (trạng thái, nhiệt độ nóng chảy, độ tan trong nước) của phenol; trình bày được tính chất hóa học cơ bản của phenol; phản ứng thế H ở nhóm –OH (tính acid: thông qua phản ứng với sodium hydroxide, sodium carbonate), phản ứng thế ở vòng thơm (tác dụng với nước bromine, với HNO3 đặc trong H2SO4 đặc).

20p trieungocchan 07-09-2023 12 4   Download

The article reports upon the preparation and characterization of organo-functionalized NieAl layered double hydroxide (LDH)-polystyrene (PS) nanocomposites. Initially, pristine NieAl LDH was synthesized via the co-precipitation technique and was subsequently treated using sodium dodecyl sulfate to obtain organo-functionalized NieAl LDH (ONieAl LDH).

10p viberbers 09-08-2023 5 3   Download

Bài viết Tổng hợp methyl ester từ dầu ăn phế thải hướng tới ứng dụng làm chất lỏng cách điện máy biến áp đánh giá tính khả thi của việc sử dụng methyl ester được điều chế từ dầu ăn phế thải để cách điện trong máy biến áp phân phối. Methyl ester được sản xuất bằng phản ứng transesterification giữa dầu ăn phế thải và methanol với chất xúc tác là sodium hydroxide.

7p viberkshire 09-08-2023 12 5   Download

In this work, NaNi0.5Ti0.5O2 cathode materials of sodium ion batteries were synthesized by a pre-milling combined with solid-state reaction method using sodium hydroxide (NaOH), nickel (II) acetate (2(CH3COO)Ni.4H2O), and titanium dioxide (TiO2) as the precursors.

8p viberkshire 09-08-2023 6 4   Download

The particle size, morphology and magnetic properties of CFO depend on the synthesized method. In this paper, we report the synthesis of CFO NPs by co-precipitation method and hydrothermal method at different concentration of sodium hydroxide and treatment temperatures to control size particles and magnetic properties by simple way.

6p vidoctorstrange 06-05-2023 4 2   Download

This research aimed to extract lignin from rice straw and reveal the pH value of diluted acid at which the most effective yield of lignin was precipitated. In this study, rice straw obtained from local fields in the An Giang province of Vietnam and sodium hydroxide 2 M was employed to extract lignin from rice straw.

5p vimalfoy 08-02-2023 9 2   Download

Aqueous sodium hydroxide solutions are extensively used as solvents for lignin in kraft pulping. These are also appealing systems for cellulose dissolution due to their inexpensiveness, ease to recycle and low toxicity. Cellulose dissolution occurs in a narrow concentration region and at low temperatures.

8p viginny 30-12-2022 11 2   Download

The hydration of calcium aluminate cement (CAC) in the presence of sodium alginate which is known to slightly retard Portland cement, was studied using heat flow calorimetry and mortar strength testing. Most surprisingly, addition of alginate resulted in an earlier occurrence of the maximal heat release as well as an increased early strength, thus confirming that in CAC alginate acts as accelerator.

9p viginny 30-12-2022 9 2   Download

Zeolite Y was prepared by a dense-gel method and subsequently modified either by treatment with diethylamine (DEA), sodium hydroxide (NaOH) or disodium ethylenediaminetetraacetate (Na2H2EDTA), or by sequential treatment (H4EDTA-NaOH or H4EDTA-NaOH-Na2H2EDTA).

11p vironald 15-12-2022 9 2   Download

The objectives of the study were (1) to determine the Biomethane Potential (BMP) of the cassava pulp waste sample collected in Duong Lieu village and (2) the effect of alkaline pre-treatment by sodium hydroxide and sodium bicarbonate on composition and anaerobic biodegradability of the waste.

6p viporsche 25-10-2022 10 2   Download

The formation of magnesium silicate hydrate gel is crucial in preventing magnesia aggregates from over hydrated during the construction of refractory castables since the presence of magnesium hydroxide diminish the mechanical properties of the material. This work aimed to investigate the accelerating effects of sodium hydrogen phosphate and heat treatment on the formation of magnesium silicate hydrate gel.

5p viporsche 25-10-2022 8 2   Download

The extraction yield of bixin from annatto seeds using acetone, soybean oil and sodium hydroxide solution with different extraction conditions were investigated in the study "Effects of different extraction methods on the recovery yield of bixin from annatto seeds (Bixa orellana L.)".

8p tieuvulinhhoa 22-09-2022 15 2   Download

The latter compounds react also by grinding method with nitrogen nucleophiles such as hydrazine hydrate, phenylhydrazine, and thiosemicarbazide to afford the corresponding pyrazol-3-yl pyrazolines. A series of 6-pyrazolylpyrimidine2-thione derivatives were prepared by reaction of the above chalcones with thiourea by grinding method in the presence of a catalytic amount of sodium hydroxide at room temperature. In addition, 7-pyrazolylpyridopyrimidine-3-thione was prepared by reaction of chalcone with 6-aminothiouracil.

15p langthannam 29-12-2021 6 0   Download

The major protein fraction in pearl millet is prolamin the alcohol soluble fraction called pennisetin. Researches on the factors affecting pennisetin extraction and on its functional properties are still very scant. In this paper, the effect of temperature, reducing agents (β-mercaptoethanol, dithiothreitol or sodium metabisulfite) and sodium hydroxide on pennisetin extraction was assessed.

7p mudbound 10-12-2021 7 1   Download

Boron-based materials are potential solutions in the field of energy. They have been regarded as hydrogen storage materials, liquid fuels of direct liquid-fed fuel cells (DLFCs), electrolytes of battery, and/or energetic substances. A typical example is sodium borohydride (NaBH4). In sodium hydroxide-stabilized aqueous solutions, it is seen as an efficient H2 generator or a performing fuel of DLFCs. Actually, it plays a wider role; it is also the precursor of several boron-based materials of interest in the field of energy.

28p tudichquannguyet 29-11-2021 8 0   Download