Back-to-cyclic monomers: chemical recycling of silicone waste using a [polydentate ligand–potassium silanolate] complex
نویسندگان
چکیده
We present a catalytic (only ppm/wt) back-to-cyclics chemical recycling strategy. Reactive distillation yields ∼99% of pure mixture cyclics (D 3 /D 4 5 ). Catalyst and repolymerization recycled monomers further silicone circularity.
منابع مشابه
chemical recycling of polycarbonate waste using conventional heating and microwave assisted method
پلی کربنات یکی از پلاستیکهای مهمی است که به صورت گسترده در تولید لوحهای فشرده، قطعات رایانه، مواد ساختمانی و غیره مورد استفاده قرار می گیرد. این پلیمر بصورت عمده از تراکم مونومر بیس فنولa (bpa) و کربنیل کلرید یا دی متیل کربنات ها بدست می آید. در سالهای اخیر بازیافت شیمیایی پلی کربنات بیشتر مورد توجه بوده است. بازیافت شیمیایی پلی کربنات برای بدست آوردن مواد اولیه آن با روشهای متفاوتی مانند تجزی...
Willingness of end users to pay for e-waste recycling
BACKGROUND AND OBJECTIVES: The sheer volume of electrical and electronic waste (e-waste) has presently been generated in Vietnam, posing a growing concern regarding its impact can have on the environment and human health. Therefore, the need for developing policies and regulations towards the environmentally sound management of e-waste is becoming crucial. Although the municipa...
متن کاملMechanochemical treatment to recycling asbestos-containing waste.
Numerous industrial and experimental facilities have been set up, particularly in the last ten years, as a result of studies and researches on treating asbestos-containing waste (ACW) to stabilise it and to enable its reuse. Some of the stabilisation processes reduce the hazards of ACW by imprisoning in a cement or resonoid matrix. Other processes modify the fibrous structure of asbestos and tr...
متن کاملHazardous Waste Recycling
he 1980s brought changing trends into the waste market with increased reclamation, T recycling and waste minimization efforts. Adapting proven tcchnologies has aided in moving these three forms of waste managcment forward. A t EncycleITexas, Inc. (ETI), the fundamental objcctive of recycling is to convert hazardous waste into products. Founded in 1988, ET1 recycles metalbearing waste streams to...
متن کاملConcentration and recycling of rare earth elements (REEs) from iron mine waste using a combination of physical separation methods
This study aims to investigate and optimize the effects of the main parameters including the particle size, gravity and magnetic separation combination, high gradient magnetic separation, magnetic field intensity, shaking table slope, washing water flow, and electrostatic separation upon the rare earth element (REE) recoveries from iron mine waste. The electron microprobe showed that high amoun...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Green Chemistry
سال: 2023
ISSN: ['1463-9262', '1463-9270']
DOI: https://doi.org/10.1039/d3gc00293d