Effect of Milling Methods on Particulate Properties and Structure of Clinoptilolite

Abstract

The effects of ultrasonic milling, dry and wet ball milling, and vibro‐milling on the particulate properties, crystalline characteristics, morphology, and surface area of clinoptilolite (Cpt) have been investigated. Laser beam scattering technique, X‐ray diffraction (XRD), scanning electron microscopy (SEM), and nitrogen adsorption/desorption at 77 K are used to characterize the initial and ground Cpt powders. Results show that Cpt particle size is significantly reduced by all carried out milling methods in which vibro‐milling could produce particles with diameter less than 100 nm. The size distribution of Cpt is remarkably narrowed by using vibro‐ and wet ball milling. The crystallinity of Cpt noticeably decreases for the samples obtained by ball milling while vibro‐ and ultrasonic millings show a negligible effect on crystallinity. The specific surface area of Cpt is enhanced by all four milling methods.

Towards the sustainable synthesis of microporous and layered titanosilicates: mechanochemical pre-treatment reduces the water amount

“…12,19 In addition to the reduction in raw materials and recycling/waste costs, there is also the advantage that the separation of the solvent from the product is not required. 12,18,[20][21][22][23][24][25][26] Mechanochemistry can also be used to study the crystallization mechanisms, as water may be added in a crystallographic ratio as a reagent (not solvent).…”

New avenues for mechanochemistry in zeolite science

“…113 Likewise, several studies on the effects of milling on the naturally occurring zeolite clinoptilolite were recently conducted. [114][115][116] All of these works are in good agreement, highlighting the importance for careful selection of correct conditions depending on the desired outcome.…”

LOẠI BỎ AMONI BẰNG CLINOPTILOLITE BIẾN TÍNH BỞI NaCl VÀ SÓNG SIÊU ÂM

“…Trong các loại vật liệu được sử dụng thì clinoptilolite (CL) được nghiên cứu nhiều, bởi vì CL có dung lượng trao đổi ion lớn, cấu trúc xốp và diện tích bề mặt lớn [4]. Đặc biệt, CL là loại vật liệu phổ biến trong tự nhiên và có độ bền hóa học và vật lý cao [5]. Việc sử dụng CL trong việc loại bỏ amoni đã được nhiều nhà khoa học nghiên cứu và các kết quả chỉ ra rằng, CL là vật liệu phù hợp cho việc loại bỏ amoni ra khỏi nước [6], [7].…”