Abstract: It is provided a process for producing a purified carbon black with a reduced content of oxy-polycyclic aromatic hydrocarbons, the process including: (a) providing a carbon black including an initial content of oxy-polycyclic aromatic hydrocarbons of 1 ppm or more, (b) treating the carbon black including an initial content of oxy-polycyclic aromatic hydrocarbons with an extraction agent including carbon dioxide in a supercritical state to extract at least a portion of the oxy-polycyclic aromatic hydrocarbons from the carbon black, and (c) removing the extraction agent including the extracted oxy-polycyclic aromatic hydrocarbons from the carbon black to obtain a purified carbon black with a lower content of oxy-polycyclic aromatic hydrocarbons than the initial content of oxy-polycyclic aromatic hydrocarbons. It is furthermore provided a carbon black obtained through said production process and articles made therefrom.

Abstract: A computer-implemented method identifies an operation parameter of an industrial process as a candidate for modification so that the process can continue even of the material at the input of the process changes. In simulation instances, the computer receives representations of the material and of operation parameters and provides a representation of the would-be product. The computer classifies the instances into first and second quality classes. The computer continues by clustering—separated by parameters—the instances according to parameter attributes and according to the first and second quality classes. The computer repeats the simulation with variations that are related to significant differences, and identifies the candidate for modification.

Abstract: Provided is a process for producing a purified carbon black with a reduced content of polycyclic aromatic hydrocarbons. The process includes (a) providing a carbon black including an initial content of polycyclic aromatic hydrocarbons, (b) treating the carbon black including an initial content of polycyclic aromatic hydrocarbons with an extraction agent including carbon dioxide in a supercritical state to extract at least a portion of the polycyclic aromatic hydrocarbons from the carbon black, and (c) removing the extraction agent including the extracted polycyclic aromatic hydrocarbons from the carbon black to obtain a purified carbon black with a lower content of polycyclic aromatic hydrocarbons than the initial content of polycyclic aromatic hydrocarbons. It is furthermore provided a carbon black obtained through said production process and articles made therefrom.

Abstract: A process for preparing (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of (meth)acrolein over a multimetal oxide composition which comprises the elements Mo, V and W and is obtained by a hydrothermal preparation route, and the multimetal oxide composition obtainable by this preparation route.

Abstract: A process for preparing (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of (meth)acrolein over a multimetal oxide composition which comprises the elements Mo, V and W and is obtained by a hydrothermal preparation route, and the multimetal oxide composition obtainable by this preparation route.