Recommanded Product: 105942-08-3In 2017 ,《Experimental investigation of the influence of reaction atmosphere on the pyrolysis of printed circuit boards》 appeared in Applied Energy. The author of the article were Evangelopoulos, Panagiotis; Kantarelis, Efthymios; Yang, Weihong. The article conveys some information:
Printed circuit boards (PCB) are one of the most challenging fractions of waste elec. and electronic equipment (WEEE) in terms of recycling due to their complexity and diversity. Pyrolysis seems to be a promising alternative for production of energy carriers from its organic fraction with simultaneous recovery of metals. Reaction atm. is among the process parameters that affects the thermal decomposition as well as the products formation and distribution. In this study, the decomposition of two different PCB fractions in inert and steam atmospheres has been investigated by means of thermogravimetric anal. (TGA) and lab scale fixed bed reactor experiments It was found that the decomposition of the tested materials in steam atm. starts at lower temperatures and proceeds slower compared to the N2 atmosphere. Moreover, a two-step decomposition has been observed on the PCB sockets fraction due to the fact that high amount of antimony oxide was present, a common additive for improving the flame retardancy, which have been also observed on previous studies (Wu et al., 2014). The presence of steam influence the pyrolysis gas composition and promotes addnl. vaporisation of antimony as verified by powder X-ray diffraction (XRD) and SEM (SEM). Finally, the liquid fraction has been qual. analyzed using a GC/MS in order to determine the brominated compounds as well as other compounds that are produced from this process. In the part of experimental materials, we found many familiar compounds, such as 4-Bromo-2-fluorobenzonitrile(cas: 105942-08-3Recommanded Product: 105942-08-3)
4-Bromo-2-fluorobenzonitrile(cas:105942-08-3) is used as a OLED intermediate, Pharmaceutical, electronic and chemical intermediate.Recommanded Product: 105942-08-3 It is used in the synthesis of heterocycles and liquid crystals.
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts