Severity: Warning
Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
Line Number: 176
Backtrace:
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML
File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global
File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword
File: /var/www/html/index.php
Line: 316
Function: require_once
To design efficient CO capture materials, it is necessary to ensure a high adsorption capacity. We recently reported that one Na site in NaY zeolite can attach two CO molecules. However, the process is not suitable for practical use because it proceeds at a low temperature. Here, we present results on CO adsorption on CaNaY zeolites, demonstrating that one Ca site can attach three CO molecules. The ν(CO) mode arising from the natural C abundance allows for easy infrared monitoring of the processes: it appears at 2298, 2294, and 2291 cm for the complexes with one, two, and three CO ligands, respectively. The CO molecules in the polyligand complexes interact vibrationally, leading to the split of the ν(CO) modes. At ambient temperature, Ca(CO) complexes predominate at >1 mbar CO and triligand species begin to form at 65 mbar. The obtained results show that CaY zeolites can be very effective CO capture materials.
Download full-text PDF |
Source |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9940206 | PMC |
http://dx.doi.org/10.1021/acs.jpclett.2c03294 | DOI Listing |
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