Simulation of the 2013 Solar House for Missouri S&amp;T

Baur, Stuart Werner

doi:10.1061/9780784479070.044

Cited by 2 publications

(2 citation statements)

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“…In fact, our catalyst can efficiently convert furfuryl alcohol to furfural with 42% yield. Similarly, piperonal is another naturally occurring molecule used in the preparation of anti-inflammatory additives to cosmetics and medicinal products . This piperonal could also be efficiently synthesized via acceptorless pathways from piperonyl alcohol in 38% yield.…”

Section: Resultsmentioning

confidence: 99%

Iridium Nanoparticles on NiO as Heterogeneous Catalysts for Acceptorless Dehydrogenation of Primary Alcohols with Tunable Product Selectivity

Bordoloi,

Kalita,

Das

2023

ACS Appl. Nano Mater.

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In this work, we introduced a nanostructured iridium catalyst supported on NiO (IrNP@NiO) for acceptorless dehydrogenative oxidation of primary alcohols. The catalyst was synthesized by a simple wet chemical technique and was characterized by HR-TEM, SEM-EDX, powder diffraction XRD, XPS, and ICP-AES analyses. The HR-TEM analysis revealed the formation of ultrasmall Ir nanoparticles with an average size of 1−2 nm over the NiO surface. A range of primary alcohols could selectively be converted to the corresponding acids or carboxylates with the concomitant evolution of 2 equiv of H 2 when the reactions were performed in the presence of a base. Interestingly, when the same reactions were performed in a base-free condition, keeping all other reaction variables the same, aldehydes were isolated as the main products along with evolution of 1 equiv of H 2 . Notably, our catalyst could efficiently convert relatively challenging biomass-based alcohols, such as furfuryl alcohol, piperonyl alcohol, or 1-adamantane ethanol, to their corresponding products, which have tremendous biological as well as industrial significance. The nanostructured iridium catalyst could be easily separated from the reaction mixture and reused for at least five runs without any significant drop in activity. The dehydrogenation strategy for benzyl alcohol was scalable up to the gram.

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Section: Resultsmentioning

confidence: 99%

Iridium Nanoparticles on NiO as Heterogeneous Catalysts for Acceptorless Dehydrogenation of Primary Alcohols with Tunable Product Selectivity

Bordoloi,

Kalita,

Das

2023

ACS Appl. Nano Mater.

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“…The measurement accuracy of polarimetry largely depends on the accurate knowledge of the matrix X. Besides many efforts to precisely build the theoretical polarization model of the entire system, since 1980s the knowledge of X can be experimentally determined in aid of a device, which can produce an incident light with a known polarization state (Baur et al 1980). It is usually called the instrumental polarization calibration unit (ICU or PCU).…”

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confidence: 99%

Spectro-polarimetric observations at the NVST: I. instrumental polarization calibration and primary measurements

Hou

Yuan

et al. 2020

Res. Astron. Astrophys.

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This paper is devoted to the primary spectro-polarimetric observation performed at the New Vacuum Solar Telescope of China since 2017, and our aim is to precisely evaluate the real polarimetric accuracy and sensitivity of this polarimetry by using full Stokes spectro-polarimetric observations of the photospheric line Fe I 532.4 nm. In the work, we briefly describe the salient characteristic of the NVST as a polarimeter in technology and then characterize its instrumental polarization based on the operation in 2017 and 2019. It is verified that the calibration method making use of the instrumental polarization calibration unit (ICU) is stable and credible. The calibration accuracy can reach up to 3×10 −3 . Based on the scientific observation of the NOAA 12645 on April 5th, 2017, we estimate that the residual cross-talk from Stokes I to Stokes Q, U and V , after the instrumental polarization calibration, is about 4×10 −3 on average, which is consistent with the calibration accuracy and close to the photon noise. The polarimetric sensitivity (i.e., the detection limit) for polarized light is of the order of 10 −3 with an integration time over 20 seconds. Slow modulation rate is indeed an issue for the present system. The present NVST polarimeter is expected to be integrated with an high-order adaptive optics system and a field scanner to realize 2D magnetic field vector measurements in the following instrumentation update.

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Simulation of the 2013 Solar House for Missouri S&T

Cited by 2 publications

References 1 publication

Iridium Nanoparticles on NiO as Heterogeneous Catalysts for Acceptorless Dehydrogenation of Primary Alcohols with Tunable Product Selectivity

Iridium Nanoparticles on NiO as Heterogeneous Catalysts for Acceptorless Dehydrogenation of Primary Alcohols with Tunable Product Selectivity

Spectro-polarimetric observations at the NVST: I. instrumental polarization calibration and primary measurements

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