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1 17 13 10 ; S ; [EN] MCM-22, MCM-36, and ITQ-2 zeolites with the intended Si/Al molar ratios of 15, 25, and 50 were synthetized and tested as catalysts for dehydration of methanol to dimethyl ether and dehydration of ethanol to diethyl ether and ethylene. The surface concentration of acid sites was regulated by the synthesis of zeolite precursors with different aluminum content in the zeolite framework, while the influence of porous structure on the overall efficiency of alcohol conversion was analyzed by application of zeolitic materials with different types of porosity-microporous MCM-22 as well as microporous-mesoporous MCM-36 and ITQ-2. The zeolitic samples were characterized with respect to their: chemical composition (ICP-OES), structure (XRD, FT-IR), texture (N-2 sorption), and surface acidity (NH3-TPD). Comparison of the catalytic activity of the studied zeolitic catalysts with other reported catalytic systems, including zeolites with the similar Si/Al ratio as well as gamma-Al2O3 (one of the commercial catalysts for methanol dehydration), shows a great potential of MCM-22, MCM-36, and ITQ-2 in the reactions of alcohols dehydration. This research was funded by National Science Centre-Poland grant number 2016/21/B/ST5/00242. U.D. acknowledges to the Spanish Government grant number MAT2017-82288-C2-1-P. The research was partially done using the equipment purchased from the funds of European Regional Development Fund, Polish Innovation Economy Operational Program, grant numberPOIG.02.01.00-12-023/08. Marosz, M.; Samojeden, B.; Kowalczyk, A.; Rutkowska, M.; Motak, M.; Díaz Morales, UM.; Palomares Gimeno, AE. (2020). MCM-22, MCM-36, and ITQ-2 Zeolites with Different Si/Al Molar Ratios as Effective Catalysts of Methanol and Ethanol Dehydration. Materials. 13(10):1-17. https://doi.org/10.3390/ma13102399 Clausen, L. R., Houbak, N., & Elmegaard, B. (2010). Technoeconomic analysis of a methanol plant based on gasification of biomass and electrolysis of water. Energy, 35(5), 2338-2347. ...

"1990 census questionnaires and other public-use forms."--T.p. ; Pt. 2A-2C. History (3v). -- pt. 5. 1990 census questionnaires and other public-use forms. ; Mode of access: Internet.

T.p. vignette by J.L. Neubauer. ; Signatures: pi1 a-b⁸ c² A-2B⁸ 2C⁶ chi². ; Holzmann, M. Deutsches Anonymen-Lexikon, ; Mode of access: Internet. ; former call number: Jantz #1691

Intro -- Preface -- Organization -- Contents -- Economic Efficiency and Social Consequences of Digital Innovations Implementation -- Unified Theory of Acceptance and Use of Social Apps: (UTAU-SA): The Role of Technology in the Promotion of Recycling Behavior -- 1 Introduction -- 2 Literature Review -- 2.1 Model and Hypothesis Development -- 3 Material and Methods -- 3.1 Measurement -- 3.2 Data Collection and Sample -- 3.3 Data Analysis -- 4 Results -- 4.1 Measurement Model -- 4.2 Structural Model -- 5 Discussion -- 5.1 Theoretical Contributions -- References -- Developing Blockchain-Based Crowdfunding Model for Property Investment -- 1 Introduction -- 2 Literature Study -- 2.1 Residential Property Investment -- 2.2 Crowdfunding -- 2.3 Blockchain -- 3 Research Methodology -- 4 Results and Discussion -- 4.1 Background of the Respondents -- 4.2 Identification of Crowdfunding Platform Features -- 4.3 Workflow of Blockchain Technology Implementation in Crowdfunding -- 5 Conclusion -- References -- Ultra High Speed Broadband Internet and Firm Creation in Germany -- 1 Introduction -- 2 Literature Background -- 3 The Case of Germany -- 3.1 Broadband Availability in Germany -- 3.2 Entrepreneurial Milieu in Germany -- 4 Data and Methodology -- 5 Results and Discussion -- 6 Conclusion -- Appendix 1. Number of Active Firms in German States, 2015-2018 -- Appendix 2. Descriptive Statistics for Variables (Natural Log Transformed) -- References -- Industrial, Service and Agricultural Digitalisation -- Information Modeling Technology as the Integrating Basis of the Development Investment Process -- 1 Introduction -- 2 Materials and Methods -- 2.1 Hypothesis Testing -- 2.2 Mechanisms and Models for Coordinating the Activities of Economic Agents -- 2.3 Data on the Effects of Information Modeling Technology Implementation.