GB/T 23517-2022Ruthenium on carbon catalyst (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 23517-2009 "Ruthenium Carbon". Compared with GB/T 23517-2009, except for structural adjustments and editorial changes, The main technical changes are as follows.

--- Changed the definition of "ruthenium carbon" (see 3.1, 3.1 of the.2009 edition);

--- Delete the terms, definitions, requirements and test methods of "ash" (see 3.2, 4.4, 5.3 of the.2009 edition);

--- Changed the example of ruthenium carbon to "mass fraction (%)-Ru/C-carbon type" (see 4.1 of the.2009 edition);

--- Delete the requirements for impurity elements "Fe, Cu" in the chemical composition table of ruthenium carbon (see 5.1, 4.2 of the.2009 edition);

--- Increased the requirements and test methods for the catalytic performance of ruthenium carbon (see 5.2, 6.2, Appendix B, Appendix C);

--- Increased the requirements for the specific surface area range of different carbon species (see 5.3, 4.4 of the.2009 edition);

---Changed the test method of ruthenium content in ruthenium carbon, the ruthenium content was changed from "thiourea spectrophotometry" to "inductively coupled plasma atom" "Emission Spectroscopy" (see 6.1.1, Appendix A, 5.1 of the.2009 edition)

---Changed the test method of impurity content in ruthenium carbon, from "flame atomic absorption spectrometry" to "inductively coupled plasma atom" "Emission Spectroscopy" (see 6.1.2, 5.2 of the.2009 edition, Appendix A);

--- Changed the drying temperature during the test of moisture content, from "70°C±5°C" to "105°C±5°C"; (see 6.4,.2009 version 6.4).

1 Scope

This document specifies the grades, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, accompanying documents and ordering of ruthenium carbon single content.

This document applies to ruthenium carbons used in fine chemicals, pharmaceuticals, environmental remediation and other hydrogenation reduction processes.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 10722 Determination of Total Surface Area and External Surface Area of Carbon Black Nitrogen Adsorption Method

HG/T 5199 Test method for the activity of ruthenium carbon catalysts for hydrogenation of pyridine to piperidine

YS/T 1502 Chemical analysis method of ruthenium compounds Platinum, ruthenium, rhodium, iridium, gold, silver, copper, iron, nickel, magnesium, manganese, lead, zinc, calcium, sodium content Determination of Inductively Coupled Plasma Atomic Emission Spectrometry

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Grades

The grade of the product is composed of the mass fraction of ruthenium (%) plus the symbol of ruthenium and the type of carbon. The product grade is expressed as. 3%- Ruthenium mass fraction (%) Ru/C- Ruthenium element symbol activated carbon Type of charcoal

5 Technical requirements