Abstract

Low-temperature nitrogen adsorption, X-ray phase analysis (XRD), and electron microscopy are used to analyze the physicochemical properties (morphology, texture, phase composition, specific surface area, and porosity) of ASD-4 ultrafine powder and the products of the reaction between ASD-4 nanopowder and Mn, Fe, Co, and Ni formates. Results from studying the morphology and phase composition of oxidation products are presented, and the specific surfaces and porosities of the powders are calculated. Features of the adsorption isotherms of the studied samples after modifying them with formates are discussed in terms of their conformity to a specific type, according to the recommendations of the International Union of Pure and Applied Chemistry (IUPAC), and to certain types of porosity. The data show that the ASD-4 + 2% Mn and ASD-4 + 2% Ni samples are the ones with the highest adsorption activity. The specific surface area is 19.7907 m²/g for ASD-4 + 2% Mn and 10.1244 m²/g for ASD-4 + 2% Ni. The ASD-4 + 2% Mn and ASD‑4 + 2% Ni samples have more pores of mixed shape (slit-like and cylindrical) with widths of around 48.7234 and 44.2675 Å, respectively. The pore volumes are 0.028250 and 0.012156 cm³/g for the ASD-4 + 2% Mn and ASD-4 + 2% Ni, respectively.

中文翻译：

---

锰，铁，钴和镍形态表面改性后ASD-4粉末的吸附和结构性质

摘要

低温氮吸附，X射线相分析（XRD）和电子显微镜用于分析ASD-4超细粉及其产物的理化性质（形态，织构，相组成，比表面积和孔隙率）。 ASD-4纳米粉与Mn，Fe，Co和Ni形态之间的反应。给出了研究氧化产物的形态和相组成的结果，并计算了粉末的比表面积和孔隙率。根据国际纯净与应用化学联合会（IUPAC）的建议，根据特定类型对所研究样品的吸附等温线的适应性，讨论了它们的吸附等温线的特征。数据表明，ASD-4 + 2％Mn和ASD-4 + 2％Ni样品具有最高的吸附活性。比表面积为19.7907 m² /克为ASD-4 + 2％的Mn和10.1244米² /克为ASD-4 + 2％的Ni。ASD-4 + 2％Mn和ASD-4 + 2％Ni样品具有更多混合形状的孔（狭缝状和圆柱状），宽度分别约为48.7234和44.2675Å。ASD-4 + 2％Mn和ASD-4 + 2％Ni的孔体积分别为0.028250和0.012156 cm ³ / g。