The early history of crystallization

Abstract

Examines the origins of human-directed crystallization, particularly in obtaining salt from seawater.

Seeking Rules Governing Mixed Molecular Crystallization

“…The small variation suggests that stopping crystallization at various points would not alter the stoichiometry significantly. Further confirmation of composition was provided by taking crystals examined by Raman microscopy, dissolving them individually in CDCl 3 , and analyzing the solutions by 1 H NMR spectroscopy (Table 5). Together, our results reveal that mixed Pnma crystals of DBT and DBF spanning a wide range of compositions grow with little discrimination of the components, despite the lack of established isostructurality.…”

“…Using crystallization to purify compounds predates recorded history. 1 The simplicity, scope, and effectiveness of the process continue to make crystallization an indispensable tool. The periodic structure of crystals reflects a high degree of molecular recognition, which promotes growth by the addition of identical components and disfavors the incorporation of foreign substances.…”

“…Using crystallization to purify compounds predates recorded history . The simplicity, scope, and effectiveness of the process continue to make crystallization an indispensable tool.…”

Exploiting the Surface Properties of Graphene for Polymorph Selectivity

“…Crystallization from solution is one of the fundamental processes that can be experienced in our everyday lives. Despite this process being known since the early centuries and its importance for numerous industries, crystallization from solution is still not completely understood. This makes the production of crystals of a desired form (polymorph) challenging. , Therefore, establishing control over the crystallization process has been an area of active research for many decades. − …”

Estudo da cristalização a partir do estado fundido de ácido graxo como material de mudança de fase.

“…A história da cristalização está intimamente ligada ao estudo dos próprios cristais, o qual foi através da familiarização dos cristais, suas formas e natureza que o homem foi capaz de aplicar seus conhecimentos a um objetivo prático e desenvolver processos mais satisfatórios para produzilos. A presença dela na industrial surge na produção de sal de cozinha e açúcar, de sulfato de sódio e de amônia para a produção de fertilizantes, carbonato de cálcio para as indústrias de pasta e papel, cerâmica e de plásticos, no fabrico de ácido bórico e outros compostos para a indústria de inseticidas e farmacêutica, entre muitos outros processos industriais (SCHOEN;GROVE;PALERMO, 1956).…”