کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
1694105 1011802 2016 4 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Effect of anion addition on the syntheses of Ca–Al layered double hydroxide via a two-step mechanochemical process
ترجمه فارسی عنوان
اثر افزودن آنیون بر سنتز هیدروکسید دو لایه Ca-Al با استفاده از یک فرایند مکانیکی شیمیایی دو مرحله ای
کلمات کلیدی
هیدروکسید دو لایه؛ کلسیم هیدروکسید؛ هیدروکسید آلومینیوم؛ مکانیکمی کوتایتی
Layered double hydroxide; Calcium hydroxide; Aluminum hydroxide; Mechanochemical; Katoite
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
چکیده انگلیسی


• A katoite phase was easily obtained by milling Ca and Al hydroxides.
• A third phase was required to form Ca–Al LDH phase.
• A solvent-free mechanochemical route allowed the synthesis of Ca–Al–X (X = CO32– or Cl−) LDHs.

A pure phase of Ca–Al–X (X = CO32 − or Cl−) layered double hydroxide (LDH) was synthesized via a two-step solvent-free mechanochemical process. Milling Ca and Al hydroxides only gave katoite as the main phase in the product. Further addition of carbonate or chloride during milling operation allowed easy formation of Ca–Al–X LDH. The as-prepared samples were characterized by X-ray diffractometry (XRD),Fourier transform infrared spectroscopy (FT-IR), thermogravimetry (TG), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The characterization results confirmed the formation of highly crystalline Ca–Al LDH phase. The idea to add a third phase to help stabilize desired compound as LDH in this work may be of help for the synthesis of other substance in general.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volumes 124–125, May 2016, Pages 267–270
نویسندگان
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