盐酸处理高岭土的物理化学特性：作为潜在催化剂的工业方法。

Physico-chemical Characterization of Hydrochloric Acid-treated Kaolin Clay: An Industry Approach as a Potential Catalyst.

机构信息

Department of Mechanical Engineering, North Eastern Regional Institute of Science and Technology (Deemed to be University, Govt. of India), Nirjuli, Itanagar, Arunachal Pradesh 791109, India.

出版信息

Comb Chem High Throughput Screen. 2020;23(3):205-213. doi: 10.2174/1386207323666200219123459.

DOI:10.2174/1386207323666200219123459

PMID:32072897

Abstract

AIMS AND OBJECTIVE

This study explains the FT-IR, XRD, XRF, SEM/EDX, TGA, and DSC/DTA characterization of commercially available kaolin clay. The objective of this paper is to explore the prominent utilization of kandites clay and useful chemical aspects for the modification of kaolin clay minerals.

MATERIALS AND METHODS

The untreated kaolin sample has been procured in this experimental work from AksharChem, Gujrat, India. The kaolin clay was treated with 4M hydrochloric acid. FT-IR, XRD, XRF, SEM/EDX, TGA, and DSC/DTA characterization methods have been used.

RESULTS

Loss on ignition was found at 10.89%. The fingerprint region of the acid-treated sample has broad and more bending vibrations than untreated samples. The high weight percentage of Ti and CaCO3 were spotted in the scanning electron micrograph by both atomic % and weight %. The FT-IR revealed the functional group of Al-O, A1-OH, and Si-O.

CONCLUSION

The morphology indicates that the presences of large particles are in the form of agglomerates. It was found that impurity like scandium vanished and manganese traced by the same atomic % 0.01 of zinc which had no presence after acid treatment. Thermogravimetric analysis indicates the sharp increments in heat flow in-between temperatures 0°C to 200°C and consequently increments in between 500°C to 550°C, a suitable range for the pyrolysis. Low amount of alumina and high amount of silica has been found out. TGA and DTA analysis satisfy the waste plastic valorization temperature ranges.

摘要

目的和目标

本研究解释了市售高岭土的 FT-IR、XRD、XRF、SEM/EDX、TGA 和 DSC/DTA 表征。本文的目的是探索 kandites 粘土的突出利用和对高岭土矿物进行改性的有用化学方面。

材料和方法

在这项实验工作中，未处理的高岭土样品从印度古吉拉特邦的 AksharChem 获得。用 4M 盐酸处理高岭土粘土。使用了 FT-IR、XRD、XRF、SEM/EDX、TGA 和 DSC/DTA 表征方法。

结果

发现灼烧失重在 10.89%。酸处理样品的指纹区域比未处理样品具有更宽和更多的弯曲振动。在扫描电子显微镜图中，通过原子%和重量%都发现钛和碳酸钙的高重量百分比。FT-IR 揭示了 Al-O、A1-OH 和 Si-O 的官能团。

结论

形态表明存在大颗粒的团聚体。发现像钪这样的杂质消失了，锰通过同样的原子%0.01的锌追踪到，酸处理后没有存在。热重分析表明在 0°C 至 200°C 之间的温度范围内热流急剧增加，随后在 500°C 至 550°C 之间的温度范围内热流增加，这是适合热解的范围。发现氧化铝的量低，二氧化硅的量高。TGA 和 DTA 分析满足废塑料增值的温度范围。