scholarly journals Solid-Phase Preparation of Al-TiO2 for Efficient Separation of Bioderived Product Danshensu

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Fei Chang ◽  
Zhong Bing He ◽  
Quan Zhou
Keyword(s):  
Solid Phase Synthesis ◽  
Ph Value ◽  
Solid Phase ◽  
Synthesis Method ◽  
Uv Spectrophotometry ◽  
Elution Volume ◽  
Phase Synthesis ◽  
Adsorption Time ◽  
Sample Concentration ◽  
Efficient Separation

Four kinds of Al-TiO2 solid samples with different Ti/Al ratios of 1 : 0.1, 1 : 0.09, 1 : 0.07, and 1 : 0.05 were synthesized via a solid-phase synthesis method and characterized by XRD, SEM, EDS, BET, and other techniques. The prepared solids were used for separation of the bioderived product danshensu, the content of which was determined by UV spectrophotometry. Moreover, the effects of extract concentration, PH value, adsorption time, and ethanol elution volume were investigated. The results showed that these Al-TiO2 samples had good adsorption and desorption ability. Especially, the solid Al-TiO2 with a Ti/Al ratio of 1 : 0.05 is more suitable for the separation of danshensu, exhibiting a higher adsorption (77.70%) under 2 h adsorption time and pH = 3; meanwhile, the high desorption rate (70.29%）was received under 80% ethanol and the sample concentration of 3.0 mg/mL.

scholarly journals Solid Phase Syntheses of Ferulic Acid Derivatives Acetyl Feruloyl Tyrosine and Acetyl Feruloyl Valyl Tyrosine

2015 ◽  
Vol 9 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Dongxin Zhao ◽  
Li Ma ◽  
Kui Lu ◽  
Juan He
Keyword(s):  
Ferulic Acid ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Acid Amide ◽  
Synthesis Method ◽  
Amide Bond ◽  
Peptide Transporter ◽  
Phase Synthesis ◽  
Amide Derivatives ◽  
Fmoc Solid Phase Synthesis

Ferulic acid was used as a common drug for cardia-cerebrovascular disease and leukopenia, but the application of ferulic acid was inhibited by the poor absorption and stability. The improvement of these defects can be realized by modifying ferulic acid by amino acids, because the amido bond can increase the bioavailability and therapeutic effect of some drugs based on the peptide transporter system of mammalian which can transport the peptidyl drugs. The peptidyl derivatives of ferulic acid, namely acetyl feruloyl tyrosine and acetyl feruloyl valyl tyrosine, were synthesized using Fmoc solid-phase synthesis method. The synthesized ferulic acid amide derivatives were purified by RP-HPLC, and characterized by IR, HNMR and ESI-MS. The results indicated that Fmoc solid phase synthesis was a convenient method for the amide bond modification of ferulic acid and the further property research on ferulic acid derivatives.

Aging Properties of Yttria-Stabilized Zirconia Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 435-438
Author(s):  
Chang Tian Huan ◽  
Jin Feng Xia ◽  
Dan Yu Jiang ◽  
Qiang Li
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
Phase Changes ◽  
Synthesis Methods ◽  
Weight Changes ◽  
Zirconia Ceramics ◽  
Phase Synthesis ◽  
Aging Properties ◽  
Aging Performance

This paper compares the low-temperature aging performance of 5Y-TZP and 8Y-TZP by coprecipitation and solid-phase synthesis methods in the steam. Analysis the weight changes of samples using analytical balance, and the sample surface microstructure and phase changes with SEM, XRD. The results show that the content of Y2O3 and synthesis method all affect the aging properties of zirconia ceramics; solid-phase synthesis of 8Y-TZP has the best anti-aging performance.

Microwave assisted solid-phase synthesis of substituted tetraazaporphyrins and a phthalocyanine-peptide conjugate

2010 ◽  
Vol 14 (10) ◽  
pp. 891-903 ◽  
Author(s):  
Mercy Mudyiwa ◽  
Margaret W. Ndinguri ◽  
Steven A. Soper ◽  
Robert P. Hammer
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
Reaction Times ◽  
Solid Support ◽  
Phase Synthesis ◽  
Covalently Bonded ◽  
Poly Ethylene ◽  
High Degree ◽  
Acid Labile

Various asymmetrically substituted phthalocyanines (Pcs) and porphyrazines (Pzs) have been synthesized in good yields using a solid-phase synthesis method with a poly(ethylene glycol) (PEG) resin attached to an indole linker as the solid support. These compounds are formed by cross condensation of maleonitrile or phthalonitrile with another phthalonitrile covalently bonded to the solid support with an amino linking group. The polymer bound Pc or Pz is separated by filtration, and washing the symmetrical Pc or Pz by-product. The amine Pc -appended to polyethylene glycol resin is further reacted to yield azide whilst still on the solid support. Cleavage of the Pc or Pz off the solid support results in 3:1 asymmetric Pz or Pz with high degree of purity, requiring minimal further purification. The use of hydrophilic PEG-based resin allows the symmetrical compound to be removed completely by washing whereas the acid labile indole linker makes it easier to cleave the product under mild conditions. The conjugation abilities of these compounds have been demonstrated by the successful conjugation of one of the azide Pcs with a peptide elaborated with an alkyne function. Use of microwave for the synthesis of these compounds results in shorter reaction times, higher yields and higher degree of purity.

The Creation of Multicomponent Octahedral Crystals with Spinel Structure Using Solid-Phase Synthesis in the Al2O3-BaO-CuO-Fe2O3-Mn2O3-NiO-SrO-TiO2- ZnO and Al2O3-BaO-CuO-Fe2O3-NiO-SrO-TiO2-WO3- ZnO Systems

2020 ◽  
Vol 989 ◽  
pp. 341-346
Author(s):  
O.V. Zaitseva ◽  
Vladimir E. Zhivulin ◽  
D.E. Zhivulin
Keyword(s):  
Experimental Study ◽  
Spinel Structure ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
Configurational Entropy ◽  
Phase Synthesis ◽  
High Entropy ◽  
Barium Strontium ◽  
Oxide Phases

This paper presents the results of an experimental study of the possibility of high-entropy oxide phases creation using the of solid-phase synthesis method in the Al2O3–BaO–CuO–Fe2O3–Mn2O3–NiO–SrO–TiO2–ZnO and Al2O3–BaO–CuO–Fe2O3–NiO–SrO–TiO2–WO3–ZnO systems. As a result of the study, a microcrystalline octahedral multicomponent phase was found in the crystallized sample. Judging by the composition, this phase has a spinel structure and is characterized (judging by the components concentrations and its ratio) by rather high values of the mixing configurational entropy. It is shown that barium, strontium and tungsten are not included in this phase in appreciable amounts. The obtained results indicate the possibility of synthesizing high-entropic spinels using these Al2O3–CuO–Fe2O3–Mn2O3–NiO–TiO2–ZnO systems.

scholarly journals Formation of Stable Lithium-Containing Ceramics Using Solid-Phase Synthesis Method

Crystals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1177
Author(s):  
Dmitriy I. Shlimas ◽  
Artem L. Kozlovskiy ◽  
Maxim V. Zdorovets
Keyword(s):  
Phase Composition ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
X Ray Diffraction ◽  
Phase Synthesis ◽  
Practical Applications ◽  
Wide Range ◽  
Pure Phase ◽  
Temperature Dependences

Today, one of the most promising materials for a wide range of practical applications is lithium-containing ceramics based on Li2TiO3. At the same time, despite the high potential of their practical application, a number of questions remains related to the methods of their preparation, as well as the formation of a stable crystal structure and a pure-phase composition. To solve these issues, this paper proposes a method for obtaining stable Li2TiO3 ceramics, which is based on solid-phase synthesis combined with the high-temperature sintering of ceramics. During the studies carried out using X-ray diffraction methods, temperature dependences of phase transformations of the TiO2/Li2Ti6O13 → Li2TiO3 type were determined, according to which, at temperatures above 800 °C, the formation of a stable Li2TiO3 phase characterized by a high structural ordering degree of 89–91% is observed. The dependence of changes in structural, optical and ferroelectric characteristics on the conditions of synthesis and phase composition of ceramics was also determined.

Synthesis of chiral fluorescence silver nano-clusters and study on the aggregation-induced emission enhancement and chiral flip

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105288-105295 ◽  
Author(s):  
Cheng Huang ◽  
Yue Liu ◽  
Liping Wu ◽  
Huawen Zhao
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
Phase Synthesis ◽  
Aggregation Induced Emission ◽  
Emission Enhancement

Using racemic GSH as ligand, AgNCs with aggregation-induced emission enhancement and chiral flip were synthesized with solid-phase synthesis method.

A green technology for the synthesis of cellulose succinate for efficient adsorption of Cd(ii) and Pb(ii) ions

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26817-26825 ◽  
Author(s):  
Xingzhen Qin ◽  
Jierong Zhou ◽  
Aimin Huang ◽  
Jialin Guan ◽  
Qinglong Zhang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Mechanical Activation ◽  
Ball Mill ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
Green Technology ◽  
Phase Synthesis ◽  
Environmental Friendly

Cellulose succinate, directly prepared by a simple and green mechanical activation-assisted solid-phase synthesis method in a stirring ball mill, was used as environmental-friendly adsorbent for efficient adsorption of heavy metals.

PREPARATION AND CHARACTERIZATION OF ELECTRIC ZAO NANOPARTICLES

NANO ◽  
2010 ◽  
Vol 05 (04) ◽  
pp. 215-220 ◽  
Author(s):  
HAO-WEI SHI ◽  
HONG-ZHEN XIE ◽  
JIN-KU LIU ◽  
YAN WANG
Keyword(s):  
Seed Germination ◽  
Root Growth ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
Strong Inhibition ◽  
Phase Synthesis ◽  
White Good ◽  
First Time

The white good dispersion zinc aluminium oxide (ZAO) nanoparticles were efficiently prepared by solid phase synthesis method. The morphologies, structures, photoelectricity of the ZAO nanoparticles and the thermochemistry behavior of the precursor were analyzed by TEM, XRD, UV-vis and TG, etc. The phytotoxicity properties of the ZAO nanoparticles were researched for the first time. The results show that the ZAO nanoparticles have a strong inhibition of seed germination and root growth. The biological toxicity of ZAO nanoparticle reduces along with the enlargement of nanoparticle size.

scholarly journals Impedance Spectroscopy of Nickel-Containing Solid Solutions of CaCu3Ti4O12

2020 ◽  
pp. 499-510
Author(s):  
Nikolay A. Sekushin ◽  
Maria M. Ignatova ◽  
Nadezhda A. Zhuk
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Synthesis Method ◽  
Impurity Phase ◽  
Chemical Bonds ◽  
Variable Electric Field ◽  
Phase Synthesis ◽  
Direct Electric Current ◽  
X Ray ◽  
Concentration Interval

Samples of CaCu3Ti4-4хNi4хO12-δ. were obtained by solid phase synthesis method. X-ray diagrams of all preparations show trace amounts of the impurity phase of copper oxide(II), at x ≥ 0.04 the impurity CaTiO3 reflexes are shown. Admixtures of nickel-containing phases in samples in all investigated concentration interval by X-ray analysis and electronic scanning microscopy are not fixed. It is established that the polarization processes in the samples are carried out at different speeds by two mechanisms. As a result of modeling using two equivalent schemes, it was found that the homogeneity of samples with growth x decreases, in the sample CaCu3Ti4-4хNi4хO12-δ (х = 0.03) polarization proceeds three times faster than in x = 0.06. The sample CaCu3Ti3.88Ni0.12O12-δ conducts direct electric current better and polarizes faster in a variable electric field than x = 0.06. The activation energy of the samples is practically the same: 0.491 (x = 0.03) and 0.499 eV (x = 0.06). After 350 °C the homogeneity of the material deteriorates, which indicates a possible disorder of the structure or a break in the chemical bonds

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