稀土萃取数据库

稀土萃取数据库系统始建于1987年，主要用于稀土的分离。一个系统主要由两部分组成：有机相和极性相（即水相）。萃取中，将两相混合、震荡，被萃成分在两相中有一分配，如稀土元素由水相进入有机相，从而可将稀土与其它元素进行分离。稀土萃取数据库的主要数据类型为:中性磷类萃取剂；胺类萃取剂；羧酸类萃取剂；机酸的萃取。数据项包括萃取剂名称、分子式、被萃成分(金属元素和机酸)、极性项即水相、稀释剂、辅助配位体、参考文献等。系统允许单项检索和多项的联合检索。单项检索包括：萃取剂名称，萃取剂分子式，被萃取元素，极性项（即水相），盐析剂，稀释剂，皂化剂，辅助配体和参考文献等。在联合检索中，只有同时满足给定的条件方可被检出。如磷酸三丁酯（TBP）萃取稀土铈，极性相是盐酸，首先给出同时满足这三个条件的所有命中“目标”，根据需要，由“detail”可以观察详细的有关数据。

The Rare Earth Solvent Extraction Database System was established in 1987, primarily serving the separation of rare earth elements. The system mainly consists of two phases: the organic phase and the polar phase (i.e., the aqueous phase). During solvent extraction, the two phases are mixed and agitated, and the extracted components exhibit a distribution between the two phases. For instance, rare earth elements transfer from the aqueous phase to the organic phase, thereby enabling the separation of rare earths from other elements.

The main data types stored in this database include neutral phosphorus-based extractants, amine-based extractants, carboxylic acid-based extractants, and extraction of organic acids. The data items cover extractant name, molecular formula, extracted components (metal elements and organic acids), polar phase (i.e., aqueous phase), diluent, auxiliary ligand, references, and other relevant information.

The system supports both single-term retrieval and combined multi-term retrieval. Single-term retrieval includes options such as extractant name, extractant molecular formula, extracted elements, polar phase (i.e., aqueous phase), salting-out agent, diluent, saponifying agent, auxiliary ligand, and references. For combined multi-term retrieval, only records that satisfy all specified conditions will be retrieved. For example, when retrieving the extraction of cerium (a rare earth element) using tributyl phosphate (TBP) with hydrochloric acid as the polar phase, the system will first return all "hits" that meet these three criteria simultaneously. Users can view detailed relevant data via the "detail" function as required.

搜集汇总

背景与挑战

背景概述

该数据集是一个专注于稀土萃取分离的数据库，始建于1987年，包含约2.0万条记录和140MB数据，主要涵盖中性磷类、胺类、羧酸类萃取剂及机酸的萃取数据。其特点是详细记录了萃取剂名称、分子式、被萃成分等多项数据项，并支持单项和联合检索，便于用户根据特定条件（如萃取剂类型、极性相、被萃元素）精确查询稀土萃取相关信息，适用于应用化学领域的研究和应用。