Reference

Mercury methylation by compounds in humic material

Mercury methylation by compounds in humic material. Nagase, Hisamitsu; Ose, Youki; Sato, Takahiko; Ishikawa, Tetsuya (Shotokugakuen Women's Junior Coll., Gifu 500, Japan). Sci. Total Environ., 32(2), 147-56 (English) 1984. CODEN: STENDL. ISSN: 0048-9697. DOCUMENT TYPE: Journal CA Section: 61 (Water) Exts.There are some reagents with their cas registry numbers 22967-92-6 and 106-42-3 are used in this study. of humic substance in river sediment and leaf mold were identified by gas chromatog.-mass spectrometry. Only 3 compds. found in humic substances had the ability for Hg methylation at pH 3.5 (i.e., BHT [128-37-0], mesitylene [108-67-8], and p-xylene [106-42-3]), but only BHT had that capability at pH 7.0. MeHg+ [22967-92-6] prodn. by BHT increased with increasing temp., Hg concn., and BHT concn.; there were high prodn. rates at pH 2 and 13.5. .

Selective poisoning of stronger acid sites on H-ZSM-5 with pyridine for hydrocarbon conversions in a pulse microreactor

Selective poisoning of stronger acid sites on H-ZSM-5 with pyridine for hydrocarbon conversions in a pulse microreactor. Nayak, Vikram S.; Choudhary, Vasant R. (Chem. Eng. Div.Some commonly used reagents like 110-86-1 and 108-38-3 are used in this experiment., Natl. Chem. Lab., Poona City 411 008, India). Indian J. Technol., 21(9), 376-8 (English) 1983. CODEN: IJOTA8. ISSN: 0019-5669. DOCUMENT TYPE: Journal CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Section cross-reference(s): 25 The catalytic activity and the product distribution in the disproportionation of toluene [108-88-3], the isomerization of o-xylene [95-47-6], and the transalkylation between 1,3,5-trimethylbenzene [108-67-8] and benzene [71-43-2] in the presence of H-ZSM-5 (zeolite) catalyst depended strongly on the extent of catalyst poisoning by pyridine [110-86-1]. The catalyst poisoning by adsorbed pyridine mols. involved a decrease in the concn. of strong acid sites and an increase in diffusional resistance in the catalyst. .