While experts in various fields discuss the potential of carbon capture and storage (CCS) technologies, the utilization of carbon dioxide as chemical feedstock is also attracting renewed and rapidly growing interest. These approaches do not compete; rather, they are complementary: CCS aims to capture and store huge quantities of carbon dioxide, while the chemical exploitation of carbon dioxide aims to generate value and develop better and more-efficient processes from a limited part of the waste stream. Provided that the overall carbon footprint for the carbon dioxide-based process chain is competitive with conventional chemical production and that the reaction with the carbon dioxide molecule is enabled by the use of appropriate catalysts, carbon dioxide can be a promising carbon source with practically unlimited availability for a range of industrially relevant products. In addition, it can be used as a versatile processing fluid based on its remarkable physicochemical properties.

Chemical Technologies for Exploiting and Recycling Carbon Dioxide into the Value Chain

Recent developments in carbon dioxide utilization for the production of organic chemicals

A quest for polycarbonates provided via sustainable epoxide/CO2 copolymerization processes

Abstract The chiral Co(salen) complex 3 is an effective catalyst for the asymmetric ring-opening of meso epoxides with benzoic acid. Enantioselectivities of 55–93% were obtained with a range of substrates.

Enantioselective catalytic ring opening of epoxides with carboxylic acids

New tetravalent metal complexes with a trianionic [ONNO]-tetradentate ligand and an ancillary chloride ligand were synthesized as catalysts for the copolymerization of epoxides with carbon dioxide (CO2). All of the titanium, zirconium, germanium, and tin complexes were found to copolymerize epoxides with CO2. In particular, the copolymerization of propylene oxide with CO2 gave the almost-completely alternating copolymers by using titanium or germanium complexes. These results are the first example of the copolymerization using tetravalent metal complexes as a main component of catalysts.

Tetravalent Metal Complexes as a New Family of Catalysts for Copolymerization of Epoxides with Carbon Dioxide

https://iopscience.iop.org/article/10.1088/1468-6996/13/2/023001/pdf

Progress in thermomechanical control of steel plates and their commercialization

Di(ketoiminato)cobalt complexes have been employed for the alternating copolymerization of alkylene oxide and carbon dioxide. These complexes exhibited not only good catalytic activity for polycarb...

New Class of Catalysts for Alternating Copolymerization of Alkylene Oxide and Carbon Dioxide

[Problem] Provided is a composite member which can contribute to simple formation and/or increased quality of fine wiring. [Solution] A composite member 100 according to one embodiment of the present invention includes a base material, an aliphatic polycarbonate-containing layer with multiple island-shaped portions arranged on the base material, and a metal ink, wherein at least a surface of the aliphatic polycarbonate-containing layer with multiple island-shaped portions has a contact angle of 50° or more between pure water and the surface when exposed to ultraviolet light including a wavelength of 180 nm or more and 370 nm or less for 15 minutes, and the metal ink is arranged on the base material at at least a portion of a region sandwiched by the precursor layers.

Composite member, method for producing composite member, and layer containing aliphatic polycarbonate

It is an object of the invention to provide a thin film transistor and a method for producing the same, which will easily achieve self-aligned formation of a source/drain region without through processes under a vacuum or a low pressure or with no use of expensive equipment. An exemplary method for producing a thin film transistor according to the invention includes an aliphatic polycarbonate layer forming step of forming an aliphatic polycarbonate layer 50 that covers a gate electrode layer 40 disposed above a semiconductor layer 20 with a gate insulator 30 being interposed between the gate electrode layer 40 and the semiconductor layer 20, and also covers the semiconductor layer 20, and has a dopant causing the semiconductor layer 20 to become an n-type or p-type semiconductor layer, and a heating step of heating at a temperature causing introduction of the dopant into the semiconductor layer 20 and decomposition of the aliphatic polycarbonate layer 50.

Semiconductor element, method for producing same and aliphatic polycarbonate

−96− Synthesiology English edition Vol.5 No.2 pp.96-113 (Sep. 2012) concept or methodology of the lean production system originally derived from pull-type production control is made applicable to the manufacturing processes of the steel industry that has a process structure suited to pushtype production control. In the Plate Mill of Kimitsu Works, the production control system was remodeled to realize integrated optimization in a process industry resulting, in the early 2000s when demand rose sharply due to the rapid expansion of the Chinese economy, in a substantial shortening of manufacturing lead time thanks to the reduction of in-process stock (Fig. 1) and in the faster expansion of production compared with other plate mills in Japan (Fig. 2). How could optimization at the level of the entire plate mill be achieved, where the manufacturing flow is complex and the constraint hurdles are quite high? This paper explains how the innovation of the production control system on the shop floor was realized, and what the steel industry, a process industry, can learn from the lean production system, by identifying and modeling the realized production control system as a multi-scale hierarchical structure.

Kiyoshi Nishioka

Papers

Progress in thermomechanical control of steel plates and their commercialization

New Class of Catalysts for Alternating Copolymerization of Alkylene Oxide and Carbon Dioxide

Composite member, method for producing composite member, and layer containing aliphatic polycarbonate

Semiconductor element, method for producing same and aliphatic polycarbonate

Toward the integrated optimization of steel plate production process